GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/arch/arm/mach-tegra/tegra20/Kconfig

@@ -0,0 +1,58 @@
+if TEGRA20
+
+choice
+	prompt "Tegra20 board select"
+	optional
+
+config TARGET_HARMONY
+	bool "NVIDIA Tegra20 Harmony evaluation board"
+	select BOARD_LATE_INIT
+
+config TARGET_MEDCOM_WIDE
+	bool "Avionic Design Medcom-Wide board"
+	select BOARD_LATE_INIT
+
+config TARGET_PAZ00
+	bool "Paz00 board"
+	select BOARD_LATE_INIT
+
+config TARGET_PLUTUX
+	bool "Avionic Design Plutux board"
+	select BOARD_LATE_INIT
+
+config TARGET_SEABOARD
+	bool "NVIDIA Seaboard"
+	select BOARD_LATE_INIT
+
+config TARGET_TEC
+	bool "Avionic Design Tamonten Evaluation Carrier"
+	select BOARD_LATE_INIT
+
+config TARGET_TRIMSLICE
+	bool "Compulab TrimSlice board"
+	select BOARD_LATE_INIT
+
+config TARGET_VENTANA
+	bool "NVIDIA Tegra20 Ventana evaluation board"
+	select BOARD_LATE_INIT
+
+config TARGET_COLIBRI_T20
+	bool "Toradex Colibri T20 board"
+	select BOARD_LATE_INIT
+
+endchoice
+
+config SYS_SOC
+	default "tegra20"
+
+source "board/nvidia/harmony/Kconfig"
+source "board/avionic-design/medcom-wide/Kconfig"
+source "board/compal/paz00/Kconfig"
+source "board/avionic-design/plutux/Kconfig"
+source "board/nvidia/seaboard/Kconfig"
+source "board/avionic-design/tec/Kconfig"
+source "board/compulab/trimslice/Kconfig"
+source "board/nvidia/ventana/Kconfig"
+source "board/toradex/colibri_t20/Kconfig"
+
+endif

source/bootloader/u-boot-2020.01/arch/arm/mach-tegra/tegra20/Makefile

@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# (C) Copyright 2010,2011 Nvidia Corporation.
+
+ifdef CONFIG_SPL_BUILD
+obj-y	+= cpu.o
+endif
+
+# The AVP is ARMv4T architecture so we must use special compiler
+# flags for any startup files it might use.
+CFLAGS_warmboot_avp.o = -march=armv4t -U__LINUX_ARM_ARCH__ \
+	-D__LINUX_ARM_ARCH__=4
+
+obj-y	+= clock.o funcmux.o pinmux.o
+obj-$(CONFIG_TEGRA_LP0) += warmboot.o crypto.o warmboot_avp.o
+obj-$(CONFIG_TEGRA_CLOCK_SCALING) += emc.o
+obj-$(CONFIG_TEGRA_PMU) += pmu.o

source/bootloader/u-boot-2020.01/arch/arm/mach-tegra/tegra20/clock.c

@@ -0,0 +1,771 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * (C) Copyright 2010-2015
+ * NVIDIA Corporation <www.nvidia.com>
+ */
+
+/* Tegra20 Clock control functions */
+
+#include <common.h>
+#include <errno.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/tegra.h>
+#include <asm/arch-tegra/clk_rst.h>
+#include <asm/arch-tegra/timer.h>
+#include <div64.h>
+#include <fdtdec.h>
+
+/*
+ * Clock types that we can use as a source. The Tegra20 has muxes for the
+ * peripheral clocks, and in most cases there are four options for the clock
+ * source. This gives us a clock 'type' and exploits what commonality exists
+ * in the device.
+ *
+ * Letters are obvious, except for T which means CLK_M, and S which means the
+ * clock derived from 32KHz. Beware that CLK_M (also called OSC in the
+ * datasheet) and PLL_M are different things. The former is the basic
+ * clock supplied to the SOC from an external oscillator. The latter is the
+ * memory clock PLL.
+ *
+ * See definitions in clock_id in the header file.
+ */
+enum clock_type_id {
+	CLOCK_TYPE_AXPT,	/* PLL_A, PLL_X, PLL_P, CLK_M */
+	CLOCK_TYPE_MCPA,	/* and so on */
+	CLOCK_TYPE_MCPT,
+	CLOCK_TYPE_PCM,
+	CLOCK_TYPE_PCMT,
+	CLOCK_TYPE_PCMT16,	/* CLOCK_TYPE_PCMT with 16-bit divider */
+	CLOCK_TYPE_PCXTS,
+	CLOCK_TYPE_PDCT,
+
+	CLOCK_TYPE_COUNT,
+	CLOCK_TYPE_NONE = -1,	/* invalid clock type */
+};
+
+enum {
+	CLOCK_MAX_MUX	= 4	/* number of source options for each clock */
+};
+
+/*
+ * Clock source mux for each clock type. This just converts our enum into
+ * a list of mux sources for use by the code. Note that CLOCK_TYPE_PCXTS
+ * is special as it has 5 sources. Since it also has a different number of
+ * bits in its register for the source, we just handle it with a special
+ * case in the code.
+ */
+#define CLK(x) CLOCK_ID_ ## x
+static enum clock_id clock_source[CLOCK_TYPE_COUNT][CLOCK_MAX_MUX] = {
+	{ CLK(AUDIO),	CLK(XCPU),	CLK(PERIPH),	CLK(OSC)	},
+	{ CLK(MEMORY),	CLK(CGENERAL),	CLK(PERIPH),	CLK(AUDIO)	},
+	{ CLK(MEMORY),	CLK(CGENERAL),	CLK(PERIPH),	CLK(OSC)	},
+	{ CLK(PERIPH),	CLK(CGENERAL),	CLK(MEMORY),	CLK(NONE)	},
+	{ CLK(PERIPH),	CLK(CGENERAL),	CLK(MEMORY),	CLK(OSC)	},
+	{ CLK(PERIPH),	CLK(CGENERAL),	CLK(MEMORY),	CLK(OSC)	},
+	{ CLK(PERIPH),	CLK(CGENERAL),	CLK(XCPU),	CLK(OSC)	},
+	{ CLK(PERIPH),	CLK(DISPLAY),	CLK(CGENERAL),	CLK(OSC)	},
+};
+
+/*
+ * Clock peripheral IDs which sadly don't match up with PERIPH_ID. This is
+ * not in the header file since it is for purely internal use - we want
+ * callers to use the PERIPH_ID for all access to peripheral clocks to avoid
+ * confusion bewteen PERIPH_ID_... and PERIPHC_...
+ *
+ * We don't call this CLOCK_PERIPH_ID or PERIPH_CLOCK_ID as it would just be
+ * confusing.
+ *
+ * Note to SOC vendors: perhaps define a unified numbering for peripherals and
+ * use it for reset, clock enable, clock source/divider and even pinmuxing
+ * if you can.
+ */
+enum periphc_internal_id {
+	/* 0x00 */
+	PERIPHC_I2S1,
+	PERIPHC_I2S2,
+	PERIPHC_SPDIF_OUT,
+	PERIPHC_SPDIF_IN,
+	PERIPHC_PWM,
+	PERIPHC_SPI1,
+	PERIPHC_SPI2,
+	PERIPHC_SPI3,
+
+	/* 0x08 */
+	PERIPHC_XIO,
+	PERIPHC_I2C1,
+	PERIPHC_DVC_I2C,
+	PERIPHC_TWC,
+	PERIPHC_0c,
+	PERIPHC_10,	/* PERIPHC_SPI1, what is this really? */
+	PERIPHC_DISP1,
+	PERIPHC_DISP2,
+
+	/* 0x10 */
+	PERIPHC_CVE,
+	PERIPHC_IDE0,
+	PERIPHC_VI,
+	PERIPHC_1c,
+	PERIPHC_SDMMC1,
+	PERIPHC_SDMMC2,
+	PERIPHC_G3D,
+	PERIPHC_G2D,
+
+	/* 0x18 */
+	PERIPHC_NDFLASH,
+	PERIPHC_SDMMC4,
+	PERIPHC_VFIR,
+	PERIPHC_EPP,
+	PERIPHC_MPE,
+	PERIPHC_MIPI,
+	PERIPHC_UART1,
+	PERIPHC_UART2,
+
+	/* 0x20 */
+	PERIPHC_HOST1X,
+	PERIPHC_21,
+	PERIPHC_TVO,
+	PERIPHC_HDMI,
+	PERIPHC_24,
+	PERIPHC_TVDAC,
+	PERIPHC_I2C2,
+	PERIPHC_EMC,
+
+	/* 0x28 */
+	PERIPHC_UART3,
+	PERIPHC_29,
+	PERIPHC_VI_SENSOR,
+	PERIPHC_2b,
+	PERIPHC_2c,
+	PERIPHC_SPI4,
+	PERIPHC_I2C3,
+	PERIPHC_SDMMC3,
+
+	/* 0x30 */
+	PERIPHC_UART4,
+	PERIPHC_UART5,
+	PERIPHC_VDE,
+	PERIPHC_OWR,
+	PERIPHC_NOR,
+	PERIPHC_CSITE,
+
+	PERIPHC_COUNT,
+
+	PERIPHC_NONE = -1,
+};
+
+/*
+ * Clock type for each peripheral clock source. We put the name in each
+ * record just so it is easy to match things up
+ */
+#define TYPE(name, type) type
+static enum clock_type_id clock_periph_type[PERIPHC_COUNT] = {
+	/* 0x00 */
+	TYPE(PERIPHC_I2S1,	CLOCK_TYPE_AXPT),
+	TYPE(PERIPHC_I2S2,	CLOCK_TYPE_AXPT),
+	TYPE(PERIPHC_SPDIF_OUT,	CLOCK_TYPE_AXPT),
+	TYPE(PERIPHC_SPDIF_IN,	CLOCK_TYPE_PCM),
+	TYPE(PERIPHC_PWM,	CLOCK_TYPE_PCXTS),
+	TYPE(PERIPHC_SPI1,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_SPI22,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_SPI3,	CLOCK_TYPE_PCMT),
+
+	/* 0x08 */
+	TYPE(PERIPHC_XIO,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_I2C1,	CLOCK_TYPE_PCMT16),
+	TYPE(PERIPHC_DVC_I2C,	CLOCK_TYPE_PCMT16),
+	TYPE(PERIPHC_TWC,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
+	TYPE(PERIPHC_SPI1,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_DISP1,	CLOCK_TYPE_PDCT),
+	TYPE(PERIPHC_DISP2,	CLOCK_TYPE_PDCT),
+
+	/* 0x10 */
+	TYPE(PERIPHC_CVE,	CLOCK_TYPE_PDCT),
+	TYPE(PERIPHC_IDE0,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_VI,	CLOCK_TYPE_MCPA),
+	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
+	TYPE(PERIPHC_SDMMC1,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_SDMMC2,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_G3D,	CLOCK_TYPE_MCPA),
+	TYPE(PERIPHC_G2D,	CLOCK_TYPE_MCPA),
+
+	/* 0x18 */
+	TYPE(PERIPHC_NDFLASH,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_SDMMC4,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_VFIR,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_EPP,	CLOCK_TYPE_MCPA),
+	TYPE(PERIPHC_MPE,	CLOCK_TYPE_MCPA),
+	TYPE(PERIPHC_MIPI,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_UART1,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_UART2,	CLOCK_TYPE_PCMT),
+
+	/* 0x20 */
+	TYPE(PERIPHC_HOST1X,	CLOCK_TYPE_MCPA),
+	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
+	TYPE(PERIPHC_TVO,	CLOCK_TYPE_PDCT),
+	TYPE(PERIPHC_HDMI,	CLOCK_TYPE_PDCT),
+	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
+	TYPE(PERIPHC_TVDAC,	CLOCK_TYPE_PDCT),
+	TYPE(PERIPHC_I2C2,	CLOCK_TYPE_PCMT16),
+	TYPE(PERIPHC_EMC,	CLOCK_TYPE_MCPT),
+
+	/* 0x28 */
+	TYPE(PERIPHC_UART3,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
+	TYPE(PERIPHC_VI,	CLOCK_TYPE_MCPA),
+	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
+	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
+	TYPE(PERIPHC_SPI4,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_I2C3,	CLOCK_TYPE_PCMT16),
+	TYPE(PERIPHC_SDMMC3,	CLOCK_TYPE_PCMT),
+
+	/* 0x30 */
+	TYPE(PERIPHC_UART4,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_UART5,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_VDE,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_OWR,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_NOR,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_CSITE,	CLOCK_TYPE_PCMT),
+};
+
+/*
+ * This array translates a periph_id to a periphc_internal_id
+ *
+ * Not present/matched up:
+ *	uint vi_sensor;	 _VI_SENSOR_0,		0x1A8
+ *	SPDIF - which is both 0x08 and 0x0c
+ *
+ */
+#define NONE(name) (-1)
+#define OFFSET(name, value) PERIPHC_ ## name
+static s8 periph_id_to_internal_id[PERIPH_ID_COUNT] = {
+	/* Low word: 31:0 */
+	NONE(CPU),
+	NONE(RESERVED1),
+	NONE(RESERVED2),
+	NONE(AC97),
+	NONE(RTC),
+	NONE(TMR),
+	PERIPHC_UART1,
+	PERIPHC_UART2,	/* and vfir 0x68 */
+
+	/* 0x08 */
+	NONE(GPIO),
+	PERIPHC_SDMMC2,
+	NONE(SPDIF),		/* 0x08 and 0x0c, unclear which to use */
+	PERIPHC_I2S1,
+	PERIPHC_I2C1,
+	PERIPHC_NDFLASH,
+	PERIPHC_SDMMC1,
+	PERIPHC_SDMMC4,
+
+	/* 0x10 */
+	PERIPHC_TWC,
+	PERIPHC_PWM,
+	PERIPHC_I2S2,
+	PERIPHC_EPP,
+	PERIPHC_VI,
+	PERIPHC_G2D,
+	NONE(USBD),
+	NONE(ISP),
+
+	/* 0x18 */
+	PERIPHC_G3D,
+	PERIPHC_IDE0,
+	PERIPHC_DISP2,
+	PERIPHC_DISP1,
+	PERIPHC_HOST1X,
+	NONE(VCP),
+	NONE(RESERVED30),
+	NONE(CACHE2),
+
+	/* Middle word: 63:32 */
+	NONE(MEM),
+	NONE(AHBDMA),
+	NONE(APBDMA),
+	NONE(RESERVED35),
+	NONE(KBC),
+	NONE(STAT_MON),
+	NONE(PMC),
+	NONE(FUSE),
+
+	/* 0x28 */
+	NONE(KFUSE),
+	NONE(SBC1),	/* SBC1, 0x34, is this SPI1? */
+	PERIPHC_NOR,
+	PERIPHC_SPI1,
+	PERIPHC_SPI2,
+	PERIPHC_XIO,
+	PERIPHC_SPI3,
+	PERIPHC_DVC_I2C,
+
+	/* 0x30 */
+	NONE(DSI),
+	PERIPHC_TVO,	/* also CVE 0x40 */
+	PERIPHC_MIPI,
+	PERIPHC_HDMI,
+	PERIPHC_CSITE,
+	PERIPHC_TVDAC,
+	PERIPHC_I2C2,
+	PERIPHC_UART3,
+
+	/* 0x38 */
+	NONE(RESERVED56),
+	PERIPHC_EMC,
+	NONE(USB2),
+	NONE(USB3),
+	PERIPHC_MPE,
+	PERIPHC_VDE,
+	NONE(BSEA),
+	NONE(BSEV),
+
+	/* Upper word 95:64 */
+	NONE(SPEEDO),
+	PERIPHC_UART4,
+	PERIPHC_UART5,
+	PERIPHC_I2C3,
+	PERIPHC_SPI4,
+	PERIPHC_SDMMC3,
+	NONE(PCIE),
+	PERIPHC_OWR,
+
+	/* 0x48 */
+	NONE(AFI),
+	NONE(CORESIGHT),
+	NONE(PCIEXCLK),
+	NONE(AVPUCQ),
+	NONE(RESERVED76),
+	NONE(RESERVED77),
+	NONE(RESERVED78),
+	NONE(RESERVED79),
+
+	/* 0x50 */
+	NONE(RESERVED80),
+	NONE(RESERVED81),
+	NONE(RESERVED82),
+	NONE(RESERVED83),
+	NONE(IRAMA),
+	NONE(IRAMB),
+	NONE(IRAMC),
+	NONE(IRAMD),
+
+	/* 0x58 */
+	NONE(CRAM2),
+};
+
+/*
+ * PLL divider shift/mask tables for all PLL IDs.
+ */
+struct clk_pll_info tegra_pll_info_table[CLOCK_ID_PLL_COUNT] = {
+	/*
+	 * T20 and T25
+	 * NOTE: If kcp_mask/kvco_mask == 0, they're not used in that PLL (PLLX, etc.)
+	 *       If lock_ena or lock_det are >31, they're not used in that PLL.
+	 */
+
+	{ .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0x3FF,  .p_shift = 20, .p_mask = 0x0F,
+	  .lock_ena = 24, .lock_det = 27, .kcp_shift = 28, .kcp_mask = 3, .kvco_shift = 27, .kvco_mask = 1 },	/* PLLC */
+	{ .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0x3FF,  .p_shift = 0,  .p_mask = 0,
+	  .lock_ena = 0,  .lock_det = 27, .kcp_shift = 1, .kcp_mask = 3, .kvco_shift = 0, .kvco_mask = 1 },	/* PLLM */
+	{ .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
+	  .lock_ena = 18, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF },	/* PLLP */
+	{ .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
+	  .lock_ena = 18, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF },	/* PLLA */
+	{ .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x01,
+	  .lock_ena = 22, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF },	/* PLLU */
+	{ .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
+	  .lock_ena = 22, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF },	/* PLLD */
+	{ .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF,  .p_shift = 20, .p_mask = 0x0F,
+	  .lock_ena = 18, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 0, .kvco_mask = 0 },	/* PLLX */
+	{ .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF,  .p_shift = 0,  .p_mask = 0,
+	  .lock_ena = 9,  .lock_det = 11, .kcp_shift = 6, .kcp_mask = 3, .kvco_shift = 0, .kvco_mask = 1 },	/* PLLE */
+	{ .m_shift = 0, .m_mask = 0x0F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
+	  .lock_ena = 18, .lock_det = 0, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF },	/* PLLS */
+};
+
+/*
+ * Get the oscillator frequency, from the corresponding hardware configuration
+ * field. T20 has 4 frequencies that it supports.
+ */
+enum clock_osc_freq clock_get_osc_freq(void)
+{
+	struct clk_rst_ctlr *clkrst =
+			(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+	u32 reg;
+
+	reg = readl(&clkrst->crc_osc_ctrl);
+	return (reg & OSC_FREQ_MASK) >> OSC_FREQ_SHIFT;
+}
+
+/* Returns a pointer to the clock source register for a peripheral */
+u32 *get_periph_source_reg(enum periph_id periph_id)
+{
+	struct clk_rst_ctlr *clkrst =
+			(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+	enum periphc_internal_id internal_id;
+
+	assert(clock_periph_id_isvalid(periph_id));
+	internal_id = periph_id_to_internal_id[periph_id];
+	assert(internal_id != -1);
+	return &clkrst->crc_clk_src[internal_id];
+}
+
+int get_periph_clock_info(enum periph_id periph_id, int *mux_bits,
+			  int *divider_bits, int *type)
+{
+	enum periphc_internal_id internal_id;
+
+	if (!clock_periph_id_isvalid(periph_id))
+		return -1;
+
+	internal_id = periph_id_to_internal_id[periph_id];
+	if (!periphc_internal_id_isvalid(internal_id))
+		return -1;
+
+	*type = clock_periph_type[internal_id];
+	if (!clock_type_id_isvalid(*type))
+		return -1;
+
+	/*
+	 * Special cases here for the clock with a 4-bit source mux and I2C
+	 * with its 16-bit divisor
+	 */
+	if (*type == CLOCK_TYPE_PCXTS)
+		*mux_bits = MASK_BITS_31_28;
+	else
+		*mux_bits = MASK_BITS_31_30;
+	if (*type == CLOCK_TYPE_PCMT16)
+		*divider_bits = 16;
+	else
+		*divider_bits = 8;
+
+	return 0;
+}
+
+enum clock_id get_periph_clock_id(enum periph_id periph_id, int source)
+{
+	enum periphc_internal_id internal_id;
+	int type;
+
+	if (!clock_periph_id_isvalid(periph_id))
+		return CLOCK_ID_NONE;
+
+	internal_id = periph_id_to_internal_id[periph_id];
+	if (!periphc_internal_id_isvalid(internal_id))
+		return CLOCK_ID_NONE;
+
+	type = clock_periph_type[internal_id];
+	if (!clock_type_id_isvalid(type))
+		return CLOCK_ID_NONE;
+
+	return clock_source[type][source];
+}
+
+/**
+ * Given a peripheral ID and the required source clock, this returns which
+ * value should be programmed into the source mux for that peripheral.
+ *
+ * There is special code here to handle the one source type with 5 sources.
+ *
+ * @param periph_id	peripheral to start
+ * @param source	PLL id of required parent clock
+ * @param mux_bits	Set to number of bits in mux register: 2 or 4
+ * @param divider_bits	Set to number of divider bits (8 or 16)
+ * @return mux value (0-4, or -1 if not found)
+ */
+int get_periph_clock_source(enum periph_id periph_id,
+		enum clock_id parent, int *mux_bits, int *divider_bits)
+{
+	enum clock_type_id type;
+	int mux, err;
+
+	err = get_periph_clock_info(periph_id, mux_bits, divider_bits, &type);
+	assert(!err);
+
+	for (mux = 0; mux < CLOCK_MAX_MUX; mux++)
+		if (clock_source[type][mux] == parent)
+			return mux;
+
+	/*
+	 * Not found: it might be looking for the 'S' in CLOCK_TYPE_PCXTS
+	 * which is not in our table. If not, then they are asking for a
+	 * source which this peripheral can't access through its mux.
+	 */
+	assert(type == CLOCK_TYPE_PCXTS);
+	assert(parent == CLOCK_ID_SFROM32KHZ);
+	if (type == CLOCK_TYPE_PCXTS && parent == CLOCK_ID_SFROM32KHZ)
+		return 4;	/* mux value for this clock */
+
+	/* if we get here, either us or the caller has made a mistake */
+	printf("Caller requested bad clock: periph=%d, parent=%d\n", periph_id,
+		parent);
+	return -1;
+}
+
+void clock_set_enable(enum periph_id periph_id, int enable)
+{
+	struct clk_rst_ctlr *clkrst =
+			(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+	u32 *clk = &clkrst->crc_clk_out_enb[PERIPH_REG(periph_id)];
+	u32 reg;
+
+	/* Enable/disable the clock to this peripheral */
+	assert(clock_periph_id_isvalid(periph_id));
+	reg = readl(clk);
+	if (enable)
+		reg |= PERIPH_MASK(periph_id);
+	else
+		reg &= ~PERIPH_MASK(periph_id);
+	writel(reg, clk);
+}
+
+void reset_set_enable(enum periph_id periph_id, int enable)
+{
+	struct clk_rst_ctlr *clkrst =
+			(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+	u32 *reset = &clkrst->crc_rst_dev[PERIPH_REG(periph_id)];
+	u32 reg;
+
+	/* Enable/disable reset to the peripheral */
+	assert(clock_periph_id_isvalid(periph_id));
+	reg = readl(reset);
+	if (enable)
+		reg |= PERIPH_MASK(periph_id);
+	else
+		reg &= ~PERIPH_MASK(periph_id);
+	writel(reg, reset);
+}
+
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+/*
+ * Convert a device tree clock ID to our peripheral ID. They are mostly
+ * the same but we are very cautious so we check that a valid clock ID is
+ * provided.
+ *
+ * @param clk_id	Clock ID according to tegra20 device tree binding
+ * @return peripheral ID, or PERIPH_ID_NONE if the clock ID is invalid
+ */
+enum periph_id clk_id_to_periph_id(int clk_id)
+{
+	if (clk_id > PERIPH_ID_COUNT)
+		return PERIPH_ID_NONE;
+
+	switch (clk_id) {
+	case PERIPH_ID_RESERVED1:
+	case PERIPH_ID_RESERVED2:
+	case PERIPH_ID_RESERVED30:
+	case PERIPH_ID_RESERVED35:
+	case PERIPH_ID_RESERVED56:
+	case PERIPH_ID_PCIEXCLK:
+	case PERIPH_ID_RESERVED76:
+	case PERIPH_ID_RESERVED77:
+	case PERIPH_ID_RESERVED78:
+	case PERIPH_ID_RESERVED79:
+	case PERIPH_ID_RESERVED80:
+	case PERIPH_ID_RESERVED81:
+	case PERIPH_ID_RESERVED82:
+	case PERIPH_ID_RESERVED83:
+	case PERIPH_ID_RESERVED91:
+		return PERIPH_ID_NONE;
+	default:
+		return clk_id;
+	}
+}
+#endif /* CONFIG_IS_ENABLED(OF_CONTROL) */
+
+void clock_early_init(void)
+{
+	/*
+	 * PLLP output frequency set to 216MHz
+	 * PLLC output frequency set to 600Mhz
+	 *
+	 * TODO: Can we calculate these values instead of hard-coding?
+	 */
+	switch (clock_get_osc_freq()) {
+	case CLOCK_OSC_FREQ_12_0: /* OSC is 12Mhz */
+		clock_set_rate(CLOCK_ID_PERIPH, 432, 12, 1, 8);
+		clock_set_rate(CLOCK_ID_CGENERAL, 600, 12, 0, 8);
+		break;
+
+	case CLOCK_OSC_FREQ_26_0: /* OSC is 26Mhz */
+		clock_set_rate(CLOCK_ID_PERIPH, 432, 26, 1, 8);
+		clock_set_rate(CLOCK_ID_CGENERAL, 600, 26, 0, 8);
+		break;
+
+	case CLOCK_OSC_FREQ_13_0: /* OSC is 13Mhz */
+		clock_set_rate(CLOCK_ID_PERIPH, 432, 13, 1, 8);
+		clock_set_rate(CLOCK_ID_CGENERAL, 600, 13, 0, 8);
+		break;
+	case CLOCK_OSC_FREQ_19_2:
+	default:
+		/*
+		 * These are not supported. It is too early to print a
+		 * message and the UART likely won't work anyway due to the
+		 * oscillator being wrong.
+		 */
+		break;
+	}
+}
+
+void arch_timer_init(void)
+{
+}
+
+#define PMC_SATA_PWRGT 0x1ac
+#define  PMC_SATA_PWRGT_PLLE_IDDQ_OVERRIDE (1 << 5)
+#define  PMC_SATA_PWRGT_PLLE_IDDQ_SWCTL (1 << 4)
+
+#define PLLE_SS_CNTL 0x68
+#define  PLLE_SS_CNTL_SSCINCINTRV(x) (((x) & 0x3f) << 24)
+#define  PLLE_SS_CNTL_SSCINC(x) (((x) & 0xff) << 16)
+#define  PLLE_SS_CNTL_SSCBYP (1 << 12)
+#define  PLLE_SS_CNTL_INTERP_RESET (1 << 11)
+#define  PLLE_SS_CNTL_BYPASS_SS (1 << 10)
+#define  PLLE_SS_CNTL_SSCMAX(x) (((x) & 0x1ff) << 0)
+
+#define PLLE_BASE 0x0e8
+#define  PLLE_BASE_ENABLE_CML (1 << 31)
+#define  PLLE_BASE_ENABLE (1 << 30)
+#define  PLLE_BASE_PLDIV_CML(x) (((x) & 0xf) << 24)
+#define  PLLE_BASE_PLDIV(x) (((x) & 0x3f) << 16)
+#define  PLLE_BASE_NDIV(x) (((x) & 0xff) << 8)
+#define  PLLE_BASE_MDIV(x) (((x) & 0xff) << 0)
+
+#define PLLE_MISC 0x0ec
+#define  PLLE_MISC_SETUP_BASE(x) (((x) & 0xffff) << 16)
+#define  PLLE_MISC_PLL_READY (1 << 15)
+#define  PLLE_MISC_LOCK (1 << 11)
+#define  PLLE_MISC_LOCK_ENABLE (1 << 9)
+#define  PLLE_MISC_SETUP_EXT(x) (((x) & 0x3) << 2)
+
+static int tegra_plle_train(void)
+{
+	unsigned int timeout = 2000;
+	unsigned long value;
+
+	value = readl(NV_PA_PMC_BASE + PMC_SATA_PWRGT);
+	value |= PMC_SATA_PWRGT_PLLE_IDDQ_OVERRIDE;
+	writel(value, NV_PA_PMC_BASE + PMC_SATA_PWRGT);
+
+	value = readl(NV_PA_PMC_BASE + PMC_SATA_PWRGT);
+	value |= PMC_SATA_PWRGT_PLLE_IDDQ_SWCTL;
+	writel(value, NV_PA_PMC_BASE + PMC_SATA_PWRGT);
+
+	value = readl(NV_PA_PMC_BASE + PMC_SATA_PWRGT);
+	value &= ~PMC_SATA_PWRGT_PLLE_IDDQ_OVERRIDE;
+	writel(value, NV_PA_PMC_BASE + PMC_SATA_PWRGT);
+
+	do {
+		value = readl(NV_PA_CLK_RST_BASE + PLLE_MISC);
+		if (value & PLLE_MISC_PLL_READY)
+			break;
+
+		udelay(100);
+	} while (--timeout);
+
+	if (timeout == 0) {
+		pr_err("timeout waiting for PLLE to become ready");
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}
+
+int tegra_plle_enable(void)
+{
+	unsigned int timeout = 1000;
+	u32 value;
+	int err;
+
+	/* disable PLLE clock */
+	value = readl(NV_PA_CLK_RST_BASE + PLLE_BASE);
+	value &= ~PLLE_BASE_ENABLE_CML;
+	value &= ~PLLE_BASE_ENABLE;
+	writel(value, NV_PA_CLK_RST_BASE + PLLE_BASE);
+
+	/* clear lock enable and setup field */
+	value = readl(NV_PA_CLK_RST_BASE + PLLE_MISC);
+	value &= ~PLLE_MISC_LOCK_ENABLE;
+	value &= ~PLLE_MISC_SETUP_BASE(0xffff);
+	value &= ~PLLE_MISC_SETUP_EXT(0x3);
+	writel(value, NV_PA_CLK_RST_BASE + PLLE_MISC);
+
+	value = readl(NV_PA_CLK_RST_BASE + PLLE_MISC);
+	if ((value & PLLE_MISC_PLL_READY) == 0) {
+		err = tegra_plle_train();
+		if (err < 0) {
+			pr_err("failed to train PLLE: %d", err);
+			return err;
+		}
+	}
+
+	value = readl(NV_PA_CLK_RST_BASE + PLLE_MISC);
+	value |= PLLE_MISC_SETUP_BASE(0x7);
+	value |= PLLE_MISC_LOCK_ENABLE;
+	value |= PLLE_MISC_SETUP_EXT(0);
+	writel(value, NV_PA_CLK_RST_BASE + PLLE_MISC);
+
+	value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
+	value |= PLLE_SS_CNTL_SSCBYP | PLLE_SS_CNTL_INTERP_RESET |
+		 PLLE_SS_CNTL_BYPASS_SS;
+	writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
+
+	value = readl(NV_PA_CLK_RST_BASE + PLLE_BASE);
+	value |= PLLE_BASE_ENABLE_CML | PLLE_BASE_ENABLE;
+	writel(value, NV_PA_CLK_RST_BASE + PLLE_BASE);
+
+	do {
+		value = readl(NV_PA_CLK_RST_BASE + PLLE_MISC);
+		if (value & PLLE_MISC_LOCK)
+			break;
+
+		udelay(2);
+	} while (--timeout);
+
+	if (timeout == 0) {
+		pr_err("timeout waiting for PLLE to lock");
+		return -ETIMEDOUT;
+	}
+
+	udelay(50);
+
+	value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
+	value &= ~PLLE_SS_CNTL_SSCINCINTRV(0x3f);
+	value |= PLLE_SS_CNTL_SSCINCINTRV(0x18);
+
+	value &= ~PLLE_SS_CNTL_SSCINC(0xff);
+	value |= PLLE_SS_CNTL_SSCINC(0x01);
+
+	value &= ~PLLE_SS_CNTL_SSCBYP;
+	value &= ~PLLE_SS_CNTL_INTERP_RESET;
+	value &= ~PLLE_SS_CNTL_BYPASS_SS;
+
+	value &= ~PLLE_SS_CNTL_SSCMAX(0x1ff);
+	value |= PLLE_SS_CNTL_SSCMAX(0x24);
+	writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
+
+	return 0;
+}
+
+struct periph_clk_init periph_clk_init_table[] = {
+	{ PERIPH_ID_SPI1, CLOCK_ID_PERIPH },
+	{ PERIPH_ID_SBC1, CLOCK_ID_PERIPH },
+	{ PERIPH_ID_SBC2, CLOCK_ID_PERIPH },
+	{ PERIPH_ID_SBC3, CLOCK_ID_PERIPH },
+	{ PERIPH_ID_SBC4, CLOCK_ID_PERIPH },
+	{ PERIPH_ID_HOST1X, CLOCK_ID_PERIPH },
+	{ PERIPH_ID_DISP1, CLOCK_ID_CGENERAL },
+	{ PERIPH_ID_NDFLASH, CLOCK_ID_PERIPH },
+	{ PERIPH_ID_SDMMC1, CLOCK_ID_PERIPH },
+	{ PERIPH_ID_SDMMC2, CLOCK_ID_PERIPH },
+	{ PERIPH_ID_SDMMC3, CLOCK_ID_PERIPH },
+	{ PERIPH_ID_SDMMC4, CLOCK_ID_PERIPH },
+	{ PERIPH_ID_PWM, CLOCK_ID_SFROM32KHZ },
+	{ PERIPH_ID_DVC_I2C, CLOCK_ID_PERIPH },
+	{ PERIPH_ID_I2C1, CLOCK_ID_PERIPH },
+	{ PERIPH_ID_I2C2, CLOCK_ID_PERIPH },
+	{ PERIPH_ID_I2C3, CLOCK_ID_PERIPH },
+	{ -1, },
+};

source/bootloader/u-boot-2020.01/arch/arm/mach-tegra/tegra20/cpu.c

@@ -0,0 +1,59 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2010-2012, NVIDIA CORPORATION.  All rights reserved.
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/tegra.h>
+#include <asm/arch-tegra/pmc.h>
+#include "../cpu.h"
+
+static void enable_cpu_power_rail(void)
+{
+	struct pmc_ctlr *pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE;
+	u32 reg;
+
+	reg = readl(&pmc->pmc_cntrl);
+	reg |= CPUPWRREQ_OE;
+	writel(reg, &pmc->pmc_cntrl);
+
+	/*
+	 * The TI PMU65861C needs a 3.75ms delay between enabling
+	 * the power rail and enabling the CPU clock.  This delay
+	 * between SM1EN and SM1 is for switching time + the ramp
+	 * up of the voltage to the CPU (VDD_CPU from PMU).
+	 */
+	udelay(3750);
+}
+
+void start_cpu(u32 reset_vector)
+{
+	/* Enable VDD_CPU */
+	enable_cpu_power_rail();
+
+	/* Hold the CPUs in reset */
+	reset_A9_cpu(1);
+
+	/* Disable the CPU clock */
+	enable_cpu_clock(0);
+
+	/* Enable CoreSight */
+	clock_enable_coresight(1);
+
+	/*
+	 * Set the entry point for CPU execution from reset,
+	 *  if it's a non-zero value.
+	 */
+	if (reset_vector)
+		writel(reset_vector, EXCEP_VECTOR_CPU_RESET_VECTOR);
+
+	/* Enable the CPU clock */
+	enable_cpu_clock(1);
+
+	/* If the CPU doesn't already have power, power it up */
+	powerup_cpu();
+
+	/* Take the CPU out of reset */
+	reset_A9_cpu(0);
+}

source/bootloader/u-boot-2020.01/arch/arm/mach-tegra/tegra20/crypto.c

@@ -0,0 +1,139 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * (C) Copyright 2010 - 2011 NVIDIA Corporation <www.nvidia.com>
+ */
+
+#include <common.h>
+#include <linux/errno.h>
+#include "crypto.h"
+#include "uboot_aes.h"
+
+static u8 zero_key[16];
+
+#define AES_CMAC_CONST_RB 0x87  /* from RFC 4493, Figure 2.2 */
+
+enum security_op {
+	SECURITY_SIGN		= 1 << 0,	/* Sign the data */
+	SECURITY_ENCRYPT	= 1 << 1,	/* Encrypt the data */
+};
+
+/**
+ * Shift a vector left by one bit
+ *
+ * \param in	Input vector
+ * \param out	Output vector
+ * \param size	Length of vector in bytes
+ */
+static void left_shift_vector(u8 *in, u8 *out, int size)
+{
+	int carry = 0;
+	int i;
+
+	for (i = size - 1; i >= 0; i--) {
+		out[i] = (in[i] << 1) | carry;
+		carry = in[i] >> 7;	/* get most significant bit */
+	}
+}
+
+/**
+ * Sign a block of data, putting the result into dst.
+ *
+ * \param key			Input AES key, length AES_KEY_LENGTH
+ * \param key_schedule		Expanded key to use
+ * \param src			Source data of length 'num_aes_blocks' blocks
+ * \param dst			Destination buffer, length AES_KEY_LENGTH
+ * \param num_aes_blocks	Number of AES blocks to encrypt
+ */
+static void sign_object(u8 *key, u8 *key_schedule, u8 *src, u8 *dst,
+			u32 num_aes_blocks)
+{
+	u8 tmp_data[AES_KEY_LENGTH];
+	u8 iv[AES_KEY_LENGTH] = {0};
+	u8 left[AES_KEY_LENGTH];
+	u8 k1[AES_KEY_LENGTH];
+	u8 *cbc_chain_data;
+	unsigned i;
+
+	cbc_chain_data = zero_key;	/* Convenient array of 0's for IV */
+
+	/* compute K1 constant needed by AES-CMAC calculation */
+	for (i = 0; i < AES_KEY_LENGTH; i++)
+		tmp_data[i] = 0;
+
+	aes_cbc_encrypt_blocks(key_schedule, iv, tmp_data, left, 1);
+
+	left_shift_vector(left, k1, sizeof(left));
+
+	if ((left[0] >> 7) != 0) /* get MSB of L */
+		k1[AES_KEY_LENGTH-1] ^= AES_CMAC_CONST_RB;
+
+	/* compute the AES-CMAC value */
+	for (i = 0; i < num_aes_blocks; i++) {
+		/* Apply the chain data */
+		aes_apply_cbc_chain_data(cbc_chain_data, src, tmp_data);
+
+		/* for the final block, XOR K1 into the IV */
+		if (i == num_aes_blocks - 1)
+			aes_apply_cbc_chain_data(tmp_data, k1, tmp_data);
+
+		/* encrypt the AES block */
+		aes_encrypt(tmp_data, key_schedule, dst);
+
+		debug("sign_obj: block %d of %d\n", i, num_aes_blocks);
+
+		/* Update pointers for next loop. */
+		cbc_chain_data = dst;
+		src += AES_KEY_LENGTH;
+	}
+}
+
+/**
+ * Encrypt and sign a block of data (depending on security mode).
+ *
+ * \param key		Input AES key, length AES_KEY_LENGTH
+ * \param oper		Security operations mask to perform (enum security_op)
+ * \param src		Source data
+ * \param length	Size of source data
+ * \param sig_dst	Destination address for signature, AES_KEY_LENGTH bytes
+ */
+static int encrypt_and_sign(u8 *key, enum security_op oper, u8 *src,
+			    u32 length, u8 *sig_dst)
+{
+	u32 num_aes_blocks;
+	u8 key_schedule[AES_EXPAND_KEY_LENGTH];
+	u8 iv[AES_KEY_LENGTH] = {0};
+
+	debug("encrypt_and_sign: length = %d\n", length);
+
+	/*
+	 * The only need for a key is for signing/checksum purposes, so
+	 * if not encrypting, expand a key of 0s.
+	 */
+	aes_expand_key(oper & SECURITY_ENCRYPT ? key : zero_key, key_schedule);
+
+	num_aes_blocks = (length + AES_KEY_LENGTH - 1) / AES_KEY_LENGTH;
+
+	if (oper & SECURITY_ENCRYPT) {
+		/* Perform this in place, resulting in src being encrypted. */
+		debug("encrypt_and_sign: begin encryption\n");
+		aes_cbc_encrypt_blocks(key_schedule, iv, src, src,
+				       num_aes_blocks);
+		debug("encrypt_and_sign: end encryption\n");
+	}
+
+	if (oper & SECURITY_SIGN) {
+		/* encrypt the data, overwriting the result in signature. */
+		debug("encrypt_and_sign: begin signing\n");
+		sign_object(key, key_schedule, src, sig_dst, num_aes_blocks);
+		debug("encrypt_and_sign: end signing\n");
+	}
+
+	return 0;
+}
+
+int sign_data_block(u8 *source, unsigned length, u8 *signature)
+{
+	return encrypt_and_sign(zero_key, SECURITY_SIGN, source,
+				length, signature);
+}

source/bootloader/u-boot-2020.01/arch/arm/mach-tegra/tegra20/crypto.h

@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * (C) Copyright 2010 - 2011 NVIDIA Corporation <www.nvidia.com>
+ */
+
+#ifndef _CRYPTO_H_
+#define _CRYPTO_H_
+
+/**
+ * Sign a block of data
+ *
+ * \param source	Source data
+ * \param length	Size of source data
+ * \param signature	Destination address for signature, AES_KEY_LENGTH bytes
+ */
+int sign_data_block(u8 *source, unsigned length, u8 *signature);
+
+#endif /* #ifndef _CRYPTO_H_ */

source/bootloader/u-boot-2020.01/arch/arm/mach-tegra/tegra20/display.c

@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ *  (C) Copyright 2010
+ *  NVIDIA Corporation <www.nvidia.com>
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/tegra.h>
+#include <asm/arch/display.h>
+#include <asm/arch-tegra/dc.h>
+#include <asm/arch-tegra/clk_rst.h>
+#include <asm/arch-tegra/timer.h>
+

source/bootloader/u-boot-2020.01/arch/arm/mach-tegra/tegra20/emc.c

@@ -0,0 +1,269 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ */
+
+#include <common.h>
+#include <fdtdec.h>
+#include <asm/io.h>
+#include <asm/arch-tegra/ap.h>
+#include <asm/arch-tegra/apb_misc.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/emc.h>
+#include <asm/arch/tegra.h>
+
+/*
+ * The EMC registers have shadow registers.  When the EMC clock is updated
+ * in the clock controller, the shadow registers are copied to the active
+ * registers, allowing glitchless memory bus frequency changes.
+ * This function updates the shadow registers for a new clock frequency,
+ * and relies on the clock lock on the emc clock to avoid races between
+ * multiple frequency changes
+ */
+
+/*
+ * This table defines the ordering of the registers provided to
+ * tegra_set_mmc()
+ * TODO: Convert to fdt version once available
+ */
+static const unsigned long emc_reg_addr[TEGRA_EMC_NUM_REGS] = {
+	0x2c,	/* RC */
+	0x30,	/* RFC */
+	0x34,	/* RAS */
+	0x38,	/* RP */
+	0x3c,	/* R2W */
+	0x40,	/* W2R */
+	0x44,	/* R2P */
+	0x48,	/* W2P */
+	0x4c,	/* RD_RCD */
+	0x50,	/* WR_RCD */
+	0x54,	/* RRD */
+	0x58,	/* REXT */
+	0x5c,	/* WDV */
+	0x60,	/* QUSE */
+	0x64,	/* QRST */
+	0x68,	/* QSAFE */
+	0x6c,	/* RDV */
+	0x70,	/* REFRESH */
+	0x74,	/* BURST_REFRESH_NUM */
+	0x78,	/* PDEX2WR */
+	0x7c,	/* PDEX2RD */
+	0x80,	/* PCHG2PDEN */
+	0x84,	/* ACT2PDEN */
+	0x88,	/* AR2PDEN */
+	0x8c,	/* RW2PDEN */
+	0x90,	/* TXSR */
+	0x94,	/* TCKE */
+	0x98,	/* TFAW */
+	0x9c,	/* TRPAB */
+	0xa0,	/* TCLKSTABLE */
+	0xa4,	/* TCLKSTOP */
+	0xa8,	/* TREFBW */
+	0xac,	/* QUSE_EXTRA */
+	0x114,	/* FBIO_CFG6 */
+	0xb0,	/* ODT_WRITE */
+	0xb4,	/* ODT_READ */
+	0x104,	/* FBIO_CFG5 */
+	0x2bc,	/* CFG_DIG_DLL */
+	0x2c0,	/* DLL_XFORM_DQS */
+	0x2c4,	/* DLL_XFORM_QUSE */
+	0x2e0,	/* ZCAL_REF_CNT */
+	0x2e4,	/* ZCAL_WAIT_CNT */
+	0x2a8,	/* AUTO_CAL_INTERVAL */
+	0x2d0,	/* CFG_CLKTRIM_0 */
+	0x2d4,	/* CFG_CLKTRIM_1 */
+	0x2d8,	/* CFG_CLKTRIM_2 */
+};
+
+struct emc_ctlr *emc_get_controller(const void *blob)
+{
+	fdt_addr_t addr;
+	int node;
+
+	node = fdtdec_next_compatible(blob, 0, COMPAT_NVIDIA_TEGRA20_EMC);
+	if (node > 0) {
+		addr = fdtdec_get_addr(blob, node, "reg");
+		if (addr != FDT_ADDR_T_NONE)
+			return (struct emc_ctlr *)addr;
+	}
+	return NULL;
+}
+
+/* Error codes we use */
+enum {
+	ERR_NO_EMC_NODE = -10,
+	ERR_NO_EMC_REG,
+	ERR_NO_FREQ,
+	ERR_FREQ_NOT_FOUND,
+	ERR_BAD_REGS,
+	ERR_NO_RAM_CODE,
+	ERR_RAM_CODE_NOT_FOUND,
+};
+
+/**
+ * Find EMC tables for the given ram code.
+ *
+ * The tegra EMC binding has two options, one using the ram code and one not.
+ * We detect which is in use by looking for the nvidia,use-ram-code property.
+ * If this is not present, then the EMC tables are directly below 'node',
+ * otherwise we select the correct emc-tables subnode based on the 'ram_code'
+ * value.
+ *
+ * @param blob		Device tree blob
+ * @param node		EMC node (nvidia,tegra20-emc compatible string)
+ * @param ram_code	RAM code to select (0-3, or -1 if unknown)
+ * @return 0 if ok, otherwise a -ve ERR_ code (see enum above)
+ */
+static int find_emc_tables(const void *blob, int node, int ram_code)
+{
+	int need_ram_code;
+	int depth;
+	int offset;
+
+	/* If we are using RAM codes, scan through the tables for our code */
+	need_ram_code = fdtdec_get_bool(blob, node, "nvidia,use-ram-code");
+	if (!need_ram_code)
+		return node;
+	if (ram_code == -1) {
+		debug("%s: RAM code required but not supplied\n", __func__);
+		return ERR_NO_RAM_CODE;
+	}
+
+	offset = node;
+	depth = 0;
+	do {
+		/*
+		 * Sadly there is no compatible string so we cannot use
+		 * fdtdec_next_compatible_subnode().
+		 */
+		offset = fdt_next_node(blob, offset, &depth);
+		if (depth <= 0)
+			break;
+
+		/* Make sure this is a direct subnode */
+		if (depth != 1)
+			continue;
+		if (strcmp("emc-tables", fdt_get_name(blob, offset, NULL)))
+			continue;
+
+		if (fdtdec_get_int(blob, offset, "nvidia,ram-code", -1)
+				== ram_code)
+			return offset;
+	} while (1);
+
+	debug("%s: Could not find tables for RAM code %d\n", __func__,
+	      ram_code);
+	return ERR_RAM_CODE_NOT_FOUND;
+}
+
+/**
+ * Decode the EMC node of the device tree, returning a pointer to the emc
+ * controller and the table to be used for the given rate.
+ *
+ * @param blob	Device tree blob
+ * @param rate	Clock speed of memory controller in Hz (=2x memory bus rate)
+ * @param emcp	Returns address of EMC controller registers
+ * @param tablep Returns pointer to table to program into EMC. There are
+ *		TEGRA_EMC_NUM_REGS entries, destined for offsets as per the
+ *		emc_reg_addr array.
+ * @return 0 if ok, otherwise a -ve error code which will allow someone to
+ * figure out roughly what went wrong by looking at this code.
+ */
+static int decode_emc(const void *blob, unsigned rate, struct emc_ctlr **emcp,
+		      const u32 **tablep)
+{
+	struct apb_misc_pp_ctlr *pp =
+		(struct apb_misc_pp_ctlr *)NV_PA_APB_MISC_BASE;
+	int ram_code;
+	int depth;
+	int node;
+
+	ram_code = (readl(&pp->strapping_opt_a) & RAM_CODE_MASK)
+			>> RAM_CODE_SHIFT;
+	/*
+	 * The EMC clock rate is twice the bus rate, and the bus rate is
+	 * measured in kHz
+	 */
+	rate = rate / 2 / 1000;
+
+	node = fdtdec_next_compatible(blob, 0, COMPAT_NVIDIA_TEGRA20_EMC);
+	if (node < 0) {
+		debug("%s: No EMC node found in FDT\n", __func__);
+		return ERR_NO_EMC_NODE;
+	}
+	*emcp = (struct emc_ctlr *)fdtdec_get_addr(blob, node, "reg");
+	if (*emcp == (struct emc_ctlr *)FDT_ADDR_T_NONE) {
+		debug("%s: No EMC node reg property\n", __func__);
+		return ERR_NO_EMC_REG;
+	}
+
+	/* Work out the parent node which contains our EMC tables */
+	node = find_emc_tables(blob, node, ram_code & 3);
+	if (node < 0)
+		return node;
+
+	depth = 0;
+	for (;;) {
+		int node_rate;
+
+		node = fdtdec_next_compatible_subnode(blob, node,
+				COMPAT_NVIDIA_TEGRA20_EMC_TABLE, &depth);
+		if (node < 0)
+			break;
+		node_rate = fdtdec_get_int(blob, node, "clock-frequency", -1);
+		if (node_rate == -1) {
+			debug("%s: Missing clock-frequency\n", __func__);
+			return ERR_NO_FREQ; /* we expect this property */
+		}
+
+		if (node_rate == rate)
+			break;
+	}
+	if (node < 0) {
+		debug("%s: No node found for clock frequency %d\n", __func__,
+		      rate);
+		return ERR_FREQ_NOT_FOUND;
+	}
+
+	*tablep = fdtdec_locate_array(blob, node, "nvidia,emc-registers",
+				      TEGRA_EMC_NUM_REGS);
+	if (!*tablep) {
+		debug("%s: node '%s' array missing / wrong size\n", __func__,
+		      fdt_get_name(blob, node, NULL));
+		return ERR_BAD_REGS;
+	}
+
+	/* All seems well */
+	return 0;
+}
+
+int tegra_set_emc(const void *blob, unsigned rate)
+{
+	struct emc_ctlr *emc;
+	const u32 *table = NULL;
+	int err, i;
+
+	err = decode_emc(blob, rate, &emc, &table);
+	if (err) {
+		debug("Warning: no valid EMC (%d), memory timings unset\n",
+		       err);
+		return err;
+	}
+
+	debug("%s: Table found, setting EMC values as follows:\n", __func__);
+	for (i = 0; i < TEGRA_EMC_NUM_REGS; i++) {
+		u32 value = fdt32_to_cpu(table[i]);
+		u32 addr = (uintptr_t)emc + emc_reg_addr[i];
+
+		debug("   %#x: %#x\n", addr, value);
+		writel(value, addr);
+	}
+
+	/* trigger emc with new settings */
+	clock_adjust_periph_pll_div(PERIPH_ID_EMC, CLOCK_ID_MEMORY,
+				clock_get_rate(CLOCK_ID_MEMORY), NULL);
+	debug("EMC clock set to %lu\n",
+	      clock_get_periph_rate(PERIPH_ID_EMC, CLOCK_ID_MEMORY));
+
+	return 0;
+}

source/bootloader/u-boot-2020.01/arch/arm/mach-tegra/tegra20/funcmux.c

@@ -0,0 +1,297 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ */
+
+/* Tegra20 high-level function multiplexing */
+#include <common.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/funcmux.h>
+#include <asm/arch/pinmux.h>
+
+/*
+ * The PINMUX macro is used to set up pinmux tables.
+ */
+#define PINMUX(grp, mux, pupd, tri)                   \
+	{PMUX_PINGRP_##grp, PMUX_FUNC_##mux, PMUX_PULL_##pupd, PMUX_TRI_##tri}
+
+static const struct pmux_pingrp_config disp1_default[] = {
+	PINMUX(LDI,   DISPA,      NORMAL,    NORMAL),
+	PINMUX(LHP0,  DISPA,      NORMAL,    NORMAL),
+	PINMUX(LHP1,  DISPA,      NORMAL,    NORMAL),
+	PINMUX(LHP2,  DISPA,      NORMAL,    NORMAL),
+	PINMUX(LHS,   DISPA,      NORMAL,    NORMAL),
+	PINMUX(LM0,   RSVD4,      NORMAL,    NORMAL),
+	PINMUX(LPP,   DISPA,      NORMAL,    NORMAL),
+	PINMUX(LPW0,  DISPA,      NORMAL,    NORMAL),
+	PINMUX(LPW2,  DISPA,      NORMAL,    NORMAL),
+	PINMUX(LSC0,  DISPA,      NORMAL,    NORMAL),
+	PINMUX(LSPI,  DISPA,      NORMAL,    NORMAL),
+	PINMUX(LVP1,  DISPA,      NORMAL,    NORMAL),
+	PINMUX(LVS,   DISPA,      NORMAL,    NORMAL),
+	PINMUX(SLXD,  SPDIF,      NORMAL,    NORMAL),
+};
+
+
+int funcmux_select(enum periph_id id, int config)
+{
+	int bad_config = config != FUNCMUX_DEFAULT;
+
+	switch (id) {
+	case PERIPH_ID_UART1:
+		switch (config) {
+		case FUNCMUX_UART1_IRRX_IRTX:
+			pinmux_set_func(PMUX_PINGRP_IRRX, PMUX_FUNC_UARTA);
+			pinmux_set_func(PMUX_PINGRP_IRTX, PMUX_FUNC_UARTA);
+			pinmux_tristate_disable(PMUX_PINGRP_IRRX);
+			pinmux_tristate_disable(PMUX_PINGRP_IRTX);
+			break;
+		case FUNCMUX_UART1_UAA_UAB:
+			pinmux_set_func(PMUX_PINGRP_UAA, PMUX_FUNC_UARTA);
+			pinmux_set_func(PMUX_PINGRP_UAB, PMUX_FUNC_UARTA);
+			pinmux_tristate_disable(PMUX_PINGRP_UAA);
+			pinmux_tristate_disable(PMUX_PINGRP_UAB);
+			bad_config = 0;
+			break;
+		case FUNCMUX_UART1_GPU:
+			pinmux_set_func(PMUX_PINGRP_GPU, PMUX_FUNC_UARTA);
+			pinmux_tristate_disable(PMUX_PINGRP_GPU);
+			bad_config = 0;
+			break;
+		case FUNCMUX_UART1_SDIO1:
+			pinmux_set_func(PMUX_PINGRP_SDIO1, PMUX_FUNC_UARTA);
+			pinmux_tristate_disable(PMUX_PINGRP_SDIO1);
+			bad_config = 0;
+			break;
+		}
+		if (!bad_config) {
+			/*
+			 * Tegra appears to boot with function UARTA pre-
+			 * selected on mux group SDB. If two mux groups are
+			 * both set to the same function, it's unclear which
+			 * group's pins drive the RX signals into the HW.
+			 * For UARTA, SDB certainly overrides group IRTX in
+			 * practice. To solve this, configure some alternative
+			 * function on SDB to avoid the conflict. Also, tri-
+			 * state the group to avoid driving any signal onto it
+			 * until we know what's connected.
+			 */
+			pinmux_tristate_enable(PMUX_PINGRP_SDB);
+			pinmux_set_func(PMUX_PINGRP_SDB,  PMUX_FUNC_SDIO3);
+		}
+		break;
+
+	case PERIPH_ID_UART2:
+		if (config == FUNCMUX_UART2_UAD) {
+			pinmux_set_func(PMUX_PINGRP_UAD, PMUX_FUNC_UARTB);
+			pinmux_tristate_disable(PMUX_PINGRP_UAD);
+		}
+		break;
+
+	case PERIPH_ID_UART4:
+		if (config == FUNCMUX_UART4_GMC) {
+			pinmux_set_func(PMUX_PINGRP_GMC, PMUX_FUNC_UARTD);
+			pinmux_tristate_disable(PMUX_PINGRP_GMC);
+		}
+		break;
+
+	case PERIPH_ID_DVC_I2C:
+		/* there is only one selection, pinmux_config is ignored */
+		if (config == FUNCMUX_DVC_I2CP) {
+			pinmux_set_func(PMUX_PINGRP_I2CP, PMUX_FUNC_I2C);
+			pinmux_tristate_disable(PMUX_PINGRP_I2CP);
+		}
+		break;
+
+	case PERIPH_ID_I2C1:
+		/* support pinmux_config of 0 for now, */
+		if (config == FUNCMUX_I2C1_RM) {
+			pinmux_set_func(PMUX_PINGRP_RM, PMUX_FUNC_I2C);
+			pinmux_tristate_disable(PMUX_PINGRP_RM);
+		}
+		break;
+	case PERIPH_ID_I2C2: /* I2C2 */
+		switch (config) {
+		case FUNCMUX_I2C2_DDC:	/* DDC pin group, select I2C2 */
+			pinmux_set_func(PMUX_PINGRP_DDC, PMUX_FUNC_I2C2);
+			/* PTA to HDMI */
+			pinmux_set_func(PMUX_PINGRP_PTA, PMUX_FUNC_HDMI);
+			pinmux_tristate_disable(PMUX_PINGRP_DDC);
+			break;
+		case FUNCMUX_I2C2_PTA:	/* PTA pin group, select I2C2 */
+			pinmux_set_func(PMUX_PINGRP_PTA, PMUX_FUNC_I2C2);
+			/* set DDC_SEL to RSVDx (RSVD2 works for now) */
+			pinmux_set_func(PMUX_PINGRP_DDC, PMUX_FUNC_RSVD2);
+			pinmux_tristate_disable(PMUX_PINGRP_PTA);
+			bad_config = 0;
+			break;
+		}
+		break;
+	case PERIPH_ID_I2C3: /* I2C3 */
+		/* support pinmux_config of 0 for now */
+		if (config == FUNCMUX_I2C3_DTF) {
+			pinmux_set_func(PMUX_PINGRP_DTF, PMUX_FUNC_I2C3);
+			pinmux_tristate_disable(PMUX_PINGRP_DTF);
+		}
+		break;
+
+	case PERIPH_ID_SDMMC1:
+		if (config == FUNCMUX_SDMMC1_SDIO1_4BIT) {
+			pinmux_set_func(PMUX_PINGRP_SDIO1, PMUX_FUNC_SDIO1);
+			pinmux_tristate_disable(PMUX_PINGRP_SDIO1);
+		}
+		break;
+
+	case PERIPH_ID_SDMMC2:
+		if (config == FUNCMUX_SDMMC2_DTA_DTD_8BIT) {
+			pinmux_set_func(PMUX_PINGRP_DTA, PMUX_FUNC_SDIO2);
+			pinmux_set_func(PMUX_PINGRP_DTD, PMUX_FUNC_SDIO2);
+
+			pinmux_tristate_disable(PMUX_PINGRP_DTA);
+			pinmux_tristate_disable(PMUX_PINGRP_DTD);
+		}
+		break;
+
+	case PERIPH_ID_SDMMC3:
+		switch (config) {
+		case FUNCMUX_SDMMC3_SDB_SLXA_8BIT:
+			pinmux_set_func(PMUX_PINGRP_SLXA, PMUX_FUNC_SDIO3);
+			pinmux_set_func(PMUX_PINGRP_SLXC, PMUX_FUNC_SDIO3);
+			pinmux_set_func(PMUX_PINGRP_SLXD, PMUX_FUNC_SDIO3);
+			pinmux_set_func(PMUX_PINGRP_SLXK, PMUX_FUNC_SDIO3);
+
+			pinmux_tristate_disable(PMUX_PINGRP_SLXA);
+			pinmux_tristate_disable(PMUX_PINGRP_SLXC);
+			pinmux_tristate_disable(PMUX_PINGRP_SLXD);
+			pinmux_tristate_disable(PMUX_PINGRP_SLXK);
+			/* fall through */
+
+		case FUNCMUX_SDMMC3_SDB_4BIT:
+			pinmux_set_func(PMUX_PINGRP_SDB, PMUX_FUNC_SDIO3);
+			pinmux_set_func(PMUX_PINGRP_SDC, PMUX_FUNC_SDIO3);
+			pinmux_set_func(PMUX_PINGRP_SDD, PMUX_FUNC_SDIO3);
+
+			pinmux_tristate_disable(PMUX_PINGRP_SDB);
+			pinmux_tristate_disable(PMUX_PINGRP_SDC);
+			pinmux_tristate_disable(PMUX_PINGRP_SDD);
+			bad_config = 0;
+			break;
+		}
+		break;
+
+	case PERIPH_ID_SDMMC4:
+		switch (config) {
+		case FUNCMUX_SDMMC4_ATC_ATD_8BIT:
+			pinmux_set_func(PMUX_PINGRP_ATC, PMUX_FUNC_SDIO4);
+			pinmux_set_func(PMUX_PINGRP_ATD, PMUX_FUNC_SDIO4);
+
+			pinmux_tristate_disable(PMUX_PINGRP_ATC);
+			pinmux_tristate_disable(PMUX_PINGRP_ATD);
+			break;
+
+		case FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT:
+			pinmux_set_func(PMUX_PINGRP_GME, PMUX_FUNC_SDIO4);
+			pinmux_tristate_disable(PMUX_PINGRP_GME);
+			/* fall through */
+
+		case FUNCMUX_SDMMC4_ATB_GMA_4_BIT:
+			pinmux_set_func(PMUX_PINGRP_ATB, PMUX_FUNC_SDIO4);
+			pinmux_set_func(PMUX_PINGRP_GMA, PMUX_FUNC_SDIO4);
+
+			pinmux_tristate_disable(PMUX_PINGRP_ATB);
+			pinmux_tristate_disable(PMUX_PINGRP_GMA);
+			bad_config = 0;
+			break;
+		}
+		break;
+
+	case PERIPH_ID_KBC:
+		if (config == FUNCMUX_DEFAULT) {
+			enum pmux_pingrp grp[] = {PMUX_PINGRP_KBCA,
+				PMUX_PINGRP_KBCB, PMUX_PINGRP_KBCC,
+				PMUX_PINGRP_KBCD, PMUX_PINGRP_KBCE,
+				PMUX_PINGRP_KBCF};
+			int i;
+
+			for (i = 0; i < ARRAY_SIZE(grp); i++) {
+				pinmux_tristate_disable(grp[i]);
+				pinmux_set_func(grp[i], PMUX_FUNC_KBC);
+				pinmux_set_pullupdown(grp[i], PMUX_PULL_UP);
+			}
+		}
+		break;
+
+	case PERIPH_ID_USB2:
+		if (config == FUNCMUX_USB2_ULPI) {
+			pinmux_set_func(PMUX_PINGRP_UAA, PMUX_FUNC_ULPI);
+			pinmux_set_func(PMUX_PINGRP_UAB, PMUX_FUNC_ULPI);
+			pinmux_set_func(PMUX_PINGRP_UDA, PMUX_FUNC_ULPI);
+
+			pinmux_tristate_disable(PMUX_PINGRP_UAA);
+			pinmux_tristate_disable(PMUX_PINGRP_UAB);
+			pinmux_tristate_disable(PMUX_PINGRP_UDA);
+		}
+		break;
+
+	case PERIPH_ID_SPI1:
+		if (config == FUNCMUX_SPI1_GMC_GMD) {
+			pinmux_set_func(PMUX_PINGRP_GMC, PMUX_FUNC_SFLASH);
+			pinmux_set_func(PMUX_PINGRP_GMD, PMUX_FUNC_SFLASH);
+
+			pinmux_tristate_disable(PMUX_PINGRP_GMC);
+			pinmux_tristate_disable(PMUX_PINGRP_GMD);
+		}
+		break;
+
+	case PERIPH_ID_NDFLASH:
+		switch (config) {
+		case FUNCMUX_NDFLASH_ATC:
+			pinmux_set_func(PMUX_PINGRP_ATC, PMUX_FUNC_NAND);
+			pinmux_tristate_disable(PMUX_PINGRP_ATC);
+			break;
+		case FUNCMUX_NDFLASH_KBC_8_BIT:
+			pinmux_set_func(PMUX_PINGRP_KBCA, PMUX_FUNC_NAND);
+			pinmux_set_func(PMUX_PINGRP_KBCB, PMUX_FUNC_NAND);
+			pinmux_set_func(PMUX_PINGRP_KBCC, PMUX_FUNC_NAND);
+			pinmux_set_func(PMUX_PINGRP_KBCD, PMUX_FUNC_NAND);
+			pinmux_set_func(PMUX_PINGRP_KBCE, PMUX_FUNC_NAND);
+			pinmux_set_func(PMUX_PINGRP_KBCF, PMUX_FUNC_NAND);
+
+			pinmux_tristate_disable(PMUX_PINGRP_KBCA);
+			pinmux_tristate_disable(PMUX_PINGRP_KBCB);
+			pinmux_tristate_disable(PMUX_PINGRP_KBCC);
+			pinmux_tristate_disable(PMUX_PINGRP_KBCD);
+			pinmux_tristate_disable(PMUX_PINGRP_KBCE);
+			pinmux_tristate_disable(PMUX_PINGRP_KBCF);
+
+			bad_config = 0;
+			break;
+		}
+		break;
+	case PERIPH_ID_DISP1:
+		if (config == FUNCMUX_DEFAULT) {
+			int i;
+
+			for (i = PMUX_PINGRP_LD0; i <= PMUX_PINGRP_LD17; i++) {
+				pinmux_set_func(i, PMUX_FUNC_DISPA);
+				pinmux_tristate_disable(i);
+				pinmux_set_pullupdown(i, PMUX_PULL_NORMAL);
+			}
+			pinmux_config_pingrp_table(disp1_default,
+						   ARRAY_SIZE(disp1_default));
+		}
+		break;
+
+	default:
+		debug("%s: invalid periph_id %d", __func__, id);
+		return -1;
+	}
+
+	if (bad_config) {
+		debug("%s: invalid config %d for periph_id %d", __func__,
+		      config, id);
+		return -1;
+	}
+
+	return 0;
+}

source/bootloader/u-boot-2020.01/arch/arm/mach-tegra/tegra20/pinmux.c

@@ -0,0 +1,424 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ */
+
+/* Tegra20 pin multiplexing functions */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/pinmux.h>
+
+/*
+ * This defines the order of the pin mux control bits in the registers. For
+ * some reason there is no correspendence between the tristate, pin mux and
+ * pullup/pulldown registers.
+ */
+enum pmux_ctlid {
+	/* 0: APB_MISC_PP_PIN_MUX_CTL_A_0 */
+	MUXCTL_UAA,
+	MUXCTL_UAB,
+	MUXCTL_UAC,
+	MUXCTL_UAD,
+	MUXCTL_UDA,
+	MUXCTL_RESERVED5,
+	MUXCTL_ATE,
+	MUXCTL_RM,
+
+	MUXCTL_ATB,
+	MUXCTL_RESERVED9,
+	MUXCTL_ATD,
+	MUXCTL_ATC,
+	MUXCTL_ATA,
+	MUXCTL_KBCF,
+	MUXCTL_KBCE,
+	MUXCTL_SDMMC1,
+
+	/* 16: APB_MISC_PP_PIN_MUX_CTL_B_0 */
+	MUXCTL_GMA,
+	MUXCTL_GMC,
+	MUXCTL_HDINT,
+	MUXCTL_SLXA,
+	MUXCTL_OWC,
+	MUXCTL_SLXC,
+	MUXCTL_SLXD,
+	MUXCTL_SLXK,
+
+	MUXCTL_UCA,
+	MUXCTL_UCB,
+	MUXCTL_DTA,
+	MUXCTL_DTB,
+	MUXCTL_RESERVED28,
+	MUXCTL_DTC,
+	MUXCTL_DTD,
+	MUXCTL_DTE,
+
+	/* 32: APB_MISC_PP_PIN_MUX_CTL_C_0 */
+	MUXCTL_DDC,
+	MUXCTL_CDEV1,
+	MUXCTL_CDEV2,
+	MUXCTL_CSUS,
+	MUXCTL_I2CP,
+	MUXCTL_KBCA,
+	MUXCTL_KBCB,
+	MUXCTL_KBCC,
+
+	MUXCTL_IRTX,
+	MUXCTL_IRRX,
+	MUXCTL_DAP1,
+	MUXCTL_DAP2,
+	MUXCTL_DAP3,
+	MUXCTL_DAP4,
+	MUXCTL_GMB,
+	MUXCTL_GMD,
+
+	/* 48: APB_MISC_PP_PIN_MUX_CTL_D_0 */
+	MUXCTL_GME,
+	MUXCTL_GPV,
+	MUXCTL_GPU,
+	MUXCTL_SPDO,
+	MUXCTL_SPDI,
+	MUXCTL_SDB,
+	MUXCTL_SDC,
+	MUXCTL_SDD,
+
+	MUXCTL_SPIH,
+	MUXCTL_SPIG,
+	MUXCTL_SPIF,
+	MUXCTL_SPIE,
+	MUXCTL_SPID,
+	MUXCTL_SPIC,
+	MUXCTL_SPIB,
+	MUXCTL_SPIA,
+
+	/* 64: APB_MISC_PP_PIN_MUX_CTL_E_0 */
+	MUXCTL_LPW0,
+	MUXCTL_LPW1,
+	MUXCTL_LPW2,
+	MUXCTL_LSDI,
+	MUXCTL_LSDA,
+	MUXCTL_LSPI,
+	MUXCTL_LCSN,
+	MUXCTL_LDC,
+
+	MUXCTL_LSCK,
+	MUXCTL_LSC0,
+	MUXCTL_LSC1,
+	MUXCTL_LHS,
+	MUXCTL_LVS,
+	MUXCTL_LM0,
+	MUXCTL_LM1,
+	MUXCTL_LVP0,
+
+	/* 80: APB_MISC_PP_PIN_MUX_CTL_F_0 */
+	MUXCTL_LD0,
+	MUXCTL_LD1,
+	MUXCTL_LD2,
+	MUXCTL_LD3,
+	MUXCTL_LD4,
+	MUXCTL_LD5,
+	MUXCTL_LD6,
+	MUXCTL_LD7,
+
+	MUXCTL_LD8,
+	MUXCTL_LD9,
+	MUXCTL_LD10,
+	MUXCTL_LD11,
+	MUXCTL_LD12,
+	MUXCTL_LD13,
+	MUXCTL_LD14,
+	MUXCTL_LD15,
+
+	/* 96: APB_MISC_PP_PIN_MUX_CTL_G_0 */
+	MUXCTL_LD16,
+	MUXCTL_LD17,
+	MUXCTL_LHP1,
+	MUXCTL_LHP2,
+	MUXCTL_LVP1,
+	MUXCTL_LHP0,
+	MUXCTL_RESERVED102,
+	MUXCTL_LPP,
+
+	MUXCTL_LDI,
+	MUXCTL_PMC,
+	MUXCTL_CRTP,
+	MUXCTL_PTA,
+	MUXCTL_RESERVED108,
+	MUXCTL_KBCD,
+	MUXCTL_GPU7,
+	MUXCTL_DTF,
+
+	MUXCTL_NONE = -1,
+};
+
+/*
+ * And this defines the order of the pullup/pulldown controls which are again
+ * in a different order
+ */
+enum pmux_pullid {
+	/* 0: APB_MISC_PP_PULLUPDOWN_REG_A_0 */
+	PUCTL_ATA,
+	PUCTL_ATB,
+	PUCTL_ATC,
+	PUCTL_ATD,
+	PUCTL_ATE,
+	PUCTL_DAP1,
+	PUCTL_DAP2,
+	PUCTL_DAP3,
+
+	PUCTL_DAP4,
+	PUCTL_DTA,
+	PUCTL_DTB,
+	PUCTL_DTC,
+	PUCTL_DTD,
+	PUCTL_DTE,
+	PUCTL_DTF,
+	PUCTL_GPV,
+
+	/* 16: APB_MISC_PP_PULLUPDOWN_REG_B_0 */
+	PUCTL_RM,
+	PUCTL_I2CP,
+	PUCTL_PTA,
+	PUCTL_GPU7,
+	PUCTL_KBCA,
+	PUCTL_KBCB,
+	PUCTL_KBCC,
+	PUCTL_KBCD,
+
+	PUCTL_SPDI,
+	PUCTL_SPDO,
+	PUCTL_GPSLXAU,
+	PUCTL_CRTP,
+	PUCTL_SLXC,
+	PUCTL_SLXD,
+	PUCTL_SLXK,
+
+	/* 32: APB_MISC_PP_PULLUPDOWN_REG_C_0 */
+	PUCTL_CDEV1,
+	PUCTL_CDEV2,
+	PUCTL_SPIA,
+	PUCTL_SPIB,
+	PUCTL_SPIC,
+	PUCTL_SPID,
+	PUCTL_SPIE,
+	PUCTL_SPIF,
+
+	PUCTL_SPIG,
+	PUCTL_SPIH,
+	PUCTL_IRTX,
+	PUCTL_IRRX,
+	PUCTL_GME,
+	PUCTL_RESERVED45,
+	PUCTL_XM2D,
+	PUCTL_XM2C,
+
+	/* 48: APB_MISC_PP_PULLUPDOWN_REG_D_0 */
+	PUCTL_UAA,
+	PUCTL_UAB,
+	PUCTL_UAC,
+	PUCTL_UAD,
+	PUCTL_UCA,
+	PUCTL_UCB,
+	PUCTL_LD17,
+	PUCTL_LD19_18,
+
+	PUCTL_LD21_20,
+	PUCTL_LD23_22,
+	PUCTL_LS,
+	PUCTL_LC,
+	PUCTL_CSUS,
+	PUCTL_DDRC,
+	PUCTL_SDC,
+	PUCTL_SDD,
+
+	/* 64: APB_MISC_PP_PULLUPDOWN_REG_E_0 */
+	PUCTL_KBCF,
+	PUCTL_KBCE,
+	PUCTL_PMCA,
+	PUCTL_PMCB,
+	PUCTL_PMCC,
+	PUCTL_PMCD,
+	PUCTL_PMCE,
+	PUCTL_CK32,
+
+	PUCTL_UDA,
+	PUCTL_SDMMC1,
+	PUCTL_GMA,
+	PUCTL_GMB,
+	PUCTL_GMC,
+	PUCTL_GMD,
+	PUCTL_DDC,
+	PUCTL_OWC,
+
+	PUCTL_NONE = -1
+};
+
+/* Convenient macro for defining pin group properties */
+#define PINALL(pingrp, f0, f1, f2, f3, mux, pupd)	\
+	{						\
+		.funcs = {				\
+			PMUX_FUNC_ ## f0,		\
+			PMUX_FUNC_ ## f1,		\
+			PMUX_FUNC_ ## f2,		\
+			PMUX_FUNC_ ## f3,		\
+		},					\
+		.ctl_id = mux,				\
+		.pull_id = pupd				\
+	}
+
+/* A normal pin group where the mux name and pull-up name match */
+#define PIN(pingrp, f0, f1, f2, f3) \
+	PINALL(pingrp, f0, f1, f2, f3, MUXCTL_##pingrp, PUCTL_##pingrp)
+
+/* A pin group where the pull-up name doesn't have a 1-1 mapping */
+#define PINP(pingrp, f0, f1, f2, f3, pupd) \
+	PINALL(pingrp, f0, f1, f2, f3, MUXCTL_##pingrp, PUCTL_##pupd)
+
+/* A pin group number which is not used */
+#define PIN_RESERVED \
+	PIN(NONE, RSVD1, RSVD2, RSVD3, RSVD4)
+
+#define DRVGRP(drvgrp) \
+	PINALL(drvgrp, RSVD1, RSVD2, RSVD3, RSVD4, MUXCTL_NONE, PUCTL_NONE)
+
+static const struct pmux_pingrp_desc tegra20_pingroups[] = {
+	PIN(ATA,    IDE,       NAND,      GMI,       RSVD4),
+	PIN(ATB,    IDE,       NAND,      GMI,       SDIO4),
+	PIN(ATC,    IDE,       NAND,      GMI,       SDIO4),
+	PIN(ATD,    IDE,       NAND,      GMI,       SDIO4),
+	PIN(CDEV1,  OSC,       PLLA_OUT,  PLLM_OUT1, AUDIO_SYNC),
+	PIN(CDEV2,  OSC,       AHB_CLK,   APB_CLK,   PLLP_OUT4),
+	PIN(CSUS,   PLLC_OUT1, PLLP_OUT2, PLLP_OUT3, VI_SENSOR_CLK),
+	PIN(DAP1,   DAP1,      RSVD2,     GMI,       SDIO2),
+
+	PIN(DAP2,   DAP2,      TWC,       RSVD3,     GMI),
+	PIN(DAP3,   DAP3,      RSVD2,     RSVD3,     RSVD4),
+	PIN(DAP4,   DAP4,      RSVD2,     GMI,       RSVD4),
+	PIN(DTA,    RSVD1,     SDIO2,     VI,        RSVD4),
+	PIN(DTB,    RSVD1,     RSVD2,     VI,        SPI1),
+	PIN(DTC,    RSVD1,     RSVD2,     VI,        RSVD4),
+	PIN(DTD,    RSVD1,     SDIO2,     VI,        RSVD4),
+	PIN(DTE,    RSVD1,     RSVD2,     VI,        SPI1),
+
+	PINP(GPU,   PWM,       UARTA,     GMI,       RSVD4,         GPSLXAU),
+	PIN(GPV,    PCIE,      RSVD2,     RSVD3,     RSVD4),
+	PIN(I2CP,   I2C,       RSVD2,     RSVD3,     RSVD4),
+	PIN(IRTX,   UARTA,     UARTB,     GMI,       SPI4),
+	PIN(IRRX,   UARTA,     UARTB,     GMI,       SPI4),
+	PIN(KBCB,   KBC,       NAND,      SDIO2,     MIO),
+	PIN(KBCA,   KBC,       NAND,      SDIO2,     EMC_TEST0_DLL),
+	PINP(PMC,   PWR_ON,    PWR_INTR,  RSVD3,     RSVD4,         NONE),
+
+	PIN(PTA,    I2C2,      HDMI,      GMI,       RSVD4),
+	PIN(RM,     I2C,       RSVD2,     RSVD3,     RSVD4),
+	PIN(KBCE,   KBC,       NAND,      OWR,       RSVD4),
+	PIN(KBCF,   KBC,       NAND,      TRACE,     MIO),
+	PIN(GMA,    UARTE,     SPI3,      GMI,       SDIO4),
+	PIN(GMC,    UARTD,     SPI4,      GMI,       SFLASH),
+	PIN(SDMMC1, SDIO1,     RSVD2,     UARTE,     UARTA),
+	PIN(OWC,    OWR,       RSVD2,     RSVD3,     RSVD4),
+
+	PIN(GME,    RSVD1,     DAP5,      GMI,       SDIO4),
+	PIN(SDC,    PWM,       TWC,       SDIO3,     SPI3),
+	PIN(SDD,    UARTA,     PWM,       SDIO3,     SPI3),
+	PIN_RESERVED,
+	PINP(SLXA,  PCIE,      SPI4,      SDIO3,     SPI2,          CRTP),
+	PIN(SLXC,   SPDIF,     SPI4,      SDIO3,     SPI2),
+	PIN(SLXD,   SPDIF,     SPI4,      SDIO3,     SPI2),
+	PIN(SLXK,   PCIE,      SPI4,      SDIO3,     SPI2),
+
+	PIN(SPDI,   SPDIF,     RSVD2,     I2C,       SDIO2),
+	PIN(SPDO,   SPDIF,     RSVD2,     I2C,       SDIO2),
+	PIN(SPIA,   SPI1,      SPI2,      SPI3,      GMI),
+	PIN(SPIB,   SPI1,      SPI2,      SPI3,      GMI),
+	PIN(SPIC,   SPI1,      SPI2,      SPI3,      GMI),
+	PIN(SPID,   SPI2,      SPI1,      SPI2_ALT,  GMI),
+	PIN(SPIE,   SPI2,      SPI1,      SPI2_ALT,  GMI),
+	PIN(SPIF,   SPI3,      SPI1,      SPI2,      RSVD4),
+
+	PIN(SPIG,   SPI3,      SPI2,      SPI2_ALT,  I2C),
+	PIN(SPIH,   SPI3,      SPI2,      SPI2_ALT,  I2C),
+	PIN(UAA,    SPI3,      MIPI_HS,   UARTA,     ULPI),
+	PIN(UAB,    SPI2,      MIPI_HS,   UARTA,     ULPI),
+	PIN(UAC,    OWR,       RSVD2,     RSVD3,     RSVD4),
+	PIN(UAD,    UARTB,     SPDIF,     UARTA,     SPI4),
+	PIN(UCA,    UARTC,     RSVD2,     GMI,       RSVD4),
+	PIN(UCB,    UARTC,     PWM,       GMI,       RSVD4),
+
+	PIN_RESERVED,
+	PIN(ATE,    IDE,       NAND,      GMI,       RSVD4),
+	PIN(KBCC,   KBC,       NAND,      TRACE,     EMC_TEST1_DLL),
+	PIN_RESERVED,
+	PIN_RESERVED,
+	PIN(GMB,    IDE,       NAND,      GMI,       GMI_INT),
+	PIN(GMD,    RSVD1,     NAND,      GMI,       SFLASH),
+	PIN(DDC,    I2C2,      RSVD2,     RSVD3,     RSVD4),
+
+	/* 64 */
+	PINP(LD0,   DISPA,     DISPB,     XIO,       RSVD4,         LD17),
+	PINP(LD1,   DISPA,     DISPB,     XIO,       RSVD4,         LD17),
+	PINP(LD2,   DISPA,     DISPB,     XIO,       RSVD4,         LD17),
+	PINP(LD3,   DISPA,     DISPB,     XIO,       RSVD4,         LD17),
+	PINP(LD4,   DISPA,     DISPB,     XIO,       RSVD4,         LD17),
+	PINP(LD5,   DISPA,     DISPB,     XIO,       RSVD4,         LD17),
+	PINP(LD6,   DISPA,     DISPB,     XIO,       RSVD4,         LD17),
+	PINP(LD7,   DISPA,     DISPB,     XIO,       RSVD4,         LD17),
+
+	PINP(LD8,   DISPA,     DISPB,     XIO,       RSVD4,         LD17),
+	PINP(LD9,   DISPA,     DISPB,     XIO,       RSVD4,         LD17),
+	PINP(LD10,  DISPA,     DISPB,     XIO,       RSVD4,         LD17),
+	PINP(LD11,  DISPA,     DISPB,     XIO,       RSVD4,         LD17),
+	PINP(LD12,  DISPA,     DISPB,     XIO,       RSVD4,         LD17),
+	PINP(LD13,  DISPA,     DISPB,     XIO,       RSVD4,         LD17),
+	PINP(LD14,  DISPA,     DISPB,     XIO,       RSVD4,         LD17),
+	PINP(LD15,  DISPA,     DISPB,     XIO,       RSVD4,         LD17),
+
+	PINP(LD16,  DISPA,     DISPB,     XIO,       RSVD4,         LD17),
+	PINP(LD17,  DISPA,     DISPB,     RSVD3,     RSVD4,         LD17),
+	PINP(LHP0,  DISPA,     DISPB,     RSVD3,     RSVD4,         LD21_20),
+	PINP(LHP1,  DISPA,     DISPB,     RSVD3,     RSVD4,         LD19_18),
+	PINP(LHP2,  DISPA,     DISPB,     RSVD3,     RSVD4,         LD19_18),
+	PINP(LVP0,  DISPA,     DISPB,     RSVD3,     RSVD4,         LC),
+	PINP(LVP1,  DISPA,     DISPB,     RSVD3,     RSVD4,         LD21_20),
+	PINP(HDINT, HDMI,      RSVD2,     RSVD3,     RSVD4,         LC),
+
+	PINP(LM0,   DISPA,     DISPB,     SPI3,      RSVD4,         LC),
+	PINP(LM1,   DISPA,     DISPB,     RSVD3,     CRT,           LC),
+	PINP(LVS,   DISPA,     DISPB,     XIO,       RSVD4,         LC),
+	PINP(LSC0,  DISPA,     DISPB,     XIO,       RSVD4,         LC),
+	PINP(LSC1,  DISPA,     DISPB,     SPI3,      HDMI,          LS),
+	PINP(LSCK,  DISPA,     DISPB,     SPI3,      HDMI,          LS),
+	PINP(LDC,   DISPA,     DISPB,     RSVD3,     RSVD4,         LS),
+	PINP(LCSN,  DISPA,     DISPB,     SPI3,      RSVD4,         LS),
+
+	/* 96 */
+	PINP(LSPI,  DISPA,     DISPB,     XIO,       HDMI,          LC),
+	PINP(LSDA,  DISPA,     DISPB,     SPI3,      HDMI,          LS),
+	PINP(LSDI,  DISPA,     DISPB,     SPI3,      RSVD4,         LS),
+	PINP(LPW0,  DISPA,     DISPB,     SPI3,      HDMI,          LS),
+	PINP(LPW1,  DISPA,     DISPB,     RSVD3,     RSVD4,         LS),
+	PINP(LPW2,  DISPA,     DISPB,     SPI3,      HDMI,          LS),
+	PINP(LDI,   DISPA,     DISPB,     RSVD3,     RSVD4,         LD23_22),
+	PINP(LHS,   DISPA,     DISPB,     XIO,       RSVD4,         LC),
+
+	PINP(LPP,   DISPA,     DISPB,     RSVD3,     RSVD4,         LD23_22),
+	PIN_RESERVED,
+	PIN(KBCD,   KBC,       NAND,      SDIO2,     MIO),
+	PIN(GPU7,   RTCK,      RSVD2,     RSVD3,     RSVD4),
+	PIN(DTF,    I2C3,      RSVD2,     VI,        RSVD4),
+	PIN(UDA,    SPI1,      RSVD2,     UARTD,     ULPI),
+	PIN(CRTP,   CRT,       RSVD2,     RSVD3,     RSVD4),
+	PINP(SDB,   UARTA,     PWM,       SDIO3,     SPI2,          NONE),
+
+	/* these pin groups only have pullup and pull down control */
+	DRVGRP(CK32),
+	DRVGRP(DDRC),
+	DRVGRP(PMCA),
+	DRVGRP(PMCB),
+	DRVGRP(PMCC),
+	DRVGRP(PMCD),
+	DRVGRP(PMCE),
+	DRVGRP(XM2C),
+	DRVGRP(XM2D),
+};
+const struct pmux_pingrp_desc *tegra_soc_pingroups = tegra20_pingroups;

source/bootloader/u-boot-2020.01/arch/arm/mach-tegra/tegra20/pmu.c

@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * (C) Copyright 2010,2011 NVIDIA Corporation <www.nvidia.com>
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <tps6586x.h>
+#include <asm/io.h>
+#include <asm/arch/tegra.h>
+#include <asm/arch-tegra/ap.h>
+#include <asm/arch-tegra/tegra_i2c.h>
+#include <asm/arch-tegra/sys_proto.h>
+
+#define VDD_CORE_NOMINAL_T25	0x17	/* 1.3v */
+#define VDD_CPU_NOMINAL_T25	0x10	/* 1.125v */
+
+#define VDD_CORE_NOMINAL_T20	0x16	/* 1.275v */
+#define VDD_CPU_NOMINAL_T20	0x0f	/* 1.1v */
+
+#define VDD_RELATION		0x02	/*  50mv */
+#define VDD_TRANSITION_STEP	0x06	/* 150mv */
+#define VDD_TRANSITION_RATE	0x06	/* 3.52mv/us */
+
+#define PMI_I2C_ADDRESS	0x34	/* chip requires this address */
+
+int pmu_set_nominal(void)
+{
+	struct udevice *bus, *dev;
+	int core, cpu;
+	int ret;
+
+	/* by default, the table has been filled with T25 settings */
+	switch (tegra_get_chip_sku()) {
+	case TEGRA_SOC_T20:
+		core = VDD_CORE_NOMINAL_T20;
+		cpu = VDD_CPU_NOMINAL_T20;
+		break;
+	case TEGRA_SOC_T25:
+		core = VDD_CORE_NOMINAL_T25;
+		cpu = VDD_CPU_NOMINAL_T25;
+		break;
+	default:
+		debug("%s: Unknown SKU id\n", __func__);
+		return -1;
+	}
+
+	ret = tegra_i2c_get_dvc_bus(&bus);
+	if (ret) {
+		debug("%s: Cannot find DVC I2C bus\n", __func__);
+		return ret;
+	}
+	ret = i2c_get_chip(bus, PMI_I2C_ADDRESS, 1, &dev);
+	if (ret) {
+		debug("%s: Cannot find DVC I2C chip\n", __func__);
+		return ret;
+	}
+
+	tps6586x_init(dev);
+	tps6586x_set_pwm_mode(TPS6586X_PWM_SM1);
+	return tps6586x_adjust_sm0_sm1(core, cpu, VDD_TRANSITION_STEP,
+				VDD_TRANSITION_RATE, VDD_RELATION);
+}

source/bootloader/u-boot-2020.01/arch/arm/mach-tegra/tegra20/warmboot.c

@@ -0,0 +1,371 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2010 - 2011
+ * NVIDIA Corporation <www.nvidia.com>
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <linux/errno.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/emc.h>
+#include <asm/arch/gp_padctrl.h>
+#include <asm/arch/pinmux.h>
+#include <asm/arch/sdram_param.h>
+#include <asm/arch/tegra.h>
+#include <asm/arch-tegra/ap.h>
+#include <asm/arch-tegra/apb_misc.h>
+#include <asm/arch-tegra/clk_rst.h>
+#include <asm/arch-tegra/pmc.h>
+#include <asm/arch-tegra/fuse.h>
+#include <asm/arch-tegra/warmboot.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifndef CONFIG_TEGRA_CLOCK_SCALING
+#error "You must enable CONFIG_TEGRA_CLOCK_SCALING to use CONFIG_TEGRA_LP0"
+#endif
+
+/*
+ * This is the place in SRAM where the SDRAM parameters are stored. There
+ * are 4 blocks, one for each RAM code
+ */
+#define SDRAM_PARAMS_BASE	(NV_PA_BASE_SRAM + 0x188)
+
+/* TODO: If we later add support for the Misc GP controller, refactor this */
+union xm2cfga_reg {
+	struct {
+		u32 reserved0:2;
+		u32 hsm_en:1;
+		u32 reserved1:2;
+		u32 preemp_en:1;
+		u32 vref_en:1;
+		u32 reserved2:5;
+		u32 cal_drvdn:5;
+		u32 reserved3:3;
+		u32 cal_drvup:5;
+		u32 reserved4:3;
+		u32 cal_drvdn_slwr:2;
+		u32 cal_drvup_slwf:2;
+	};
+	u32 word;
+};
+
+union xm2cfgd_reg {
+	struct {
+		u32 reserved0:2;
+		u32 hsm_en:1;
+		u32 schmt_en:1;
+		u32 lpmd:2;
+		u32 vref_en:1;
+		u32 reserved1:5;
+		u32 cal_drvdn:5;
+		u32 reserved2:3;
+		u32 cal_drvup:5;
+		u32 reserved3:3;
+		u32 cal_drvdn_slwr:2;
+		u32 cal_drvup_slwf:2;
+	};
+	u32 word;
+};
+
+/*
+ * TODO: This register is not documented in the TRM yet. We could move this
+ * into the EMC and give it a proper interface, but not while it is
+ * undocumented.
+ */
+union fbio_spare_reg {
+	struct {
+		u32 reserved:24;
+		u32 cfg_wb0:8;
+	};
+	u32 word;
+};
+
+/* We pack the resume information into these unions for later */
+union scratch2_reg {
+	struct {
+		u32 pllm_base_divm:5;
+		u32 pllm_base_divn:10;
+		u32 pllm_base_divp:3;
+		u32 pllm_misc_lfcon:4;
+		u32 pllm_misc_cpcon:4;
+		u32 gp_xm2cfga_padctrl_preemp:1;
+		u32 gp_xm2cfgd_padctrl_schmt:1;
+		u32 osc_ctrl_xobp:1;
+		u32 memory_type:3;
+	};
+	u32 word;
+};
+
+union scratch4_reg {
+	struct {
+		u32 emc_clock_divider:8;
+		u32 pllm_stable_time:8;
+		u32 pllx_stable_time:8;
+		u32 emc_fbio_spare_cfg_wb0:8;
+	};
+	u32 word;
+};
+
+union scratch24_reg {
+	struct {
+		u32 emc_auto_cal_wait:8;
+		u32 emc_pin_program_wait:8;
+		u32 warmboot_wait:8;
+		u32 reserved:8;
+	};
+	u32 word;
+};
+
+int warmboot_save_sdram_params(void)
+{
+	u32 ram_code;
+	struct sdram_params sdram;
+	struct apb_misc_pp_ctlr *apb_misc =
+				(struct apb_misc_pp_ctlr *)NV_PA_APB_MISC_BASE;
+	struct pmc_ctlr *pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE;
+	struct apb_misc_gp_ctlr *gp =
+			(struct apb_misc_gp_ctlr *)NV_PA_APB_MISC_GP_BASE;
+	struct emc_ctlr *emc = emc_get_controller(gd->fdt_blob);
+	union scratch2_reg scratch2;
+	union scratch4_reg scratch4;
+	union scratch24_reg scratch24;
+	union xm2cfga_reg xm2cfga;
+	union xm2cfgd_reg xm2cfgd;
+	union fbio_spare_reg fbio_spare;
+
+	/* get ram code that is used as index to array sdram_params in BCT */
+	ram_code = (readl(&apb_misc->strapping_opt_a) >>
+			  STRAP_OPT_A_RAM_CODE_SHIFT) & 3;
+	memcpy(&sdram,
+	       (char *)((struct sdram_params *)SDRAM_PARAMS_BASE + ram_code),
+	       sizeof(sdram));
+
+	xm2cfga.word = readl(&gp->xm2cfga);
+	xm2cfgd.word = readl(&gp->xm2cfgd);
+
+	scratch2.word = 0;
+	scratch2.osc_ctrl_xobp = clock_get_osc_bypass();
+
+	/* Get the memory PLL settings */
+	{
+		u32 divm, divn, divp, cpcon, lfcon;
+
+		if (clock_ll_read_pll(CLOCK_ID_MEMORY, &divm, &divn, &divp,
+					&cpcon, &lfcon))
+			return -1;
+		scratch2.pllm_base_divm = divm;
+		scratch2.pllm_base_divn = divn;
+		scratch2.pllm_base_divp = divp;
+		scratch2.pllm_misc_cpcon = cpcon;
+		scratch2.pllm_misc_lfcon = lfcon;
+	}
+
+	scratch2.gp_xm2cfga_padctrl_preemp = xm2cfga.preemp_en;
+	scratch2.gp_xm2cfgd_padctrl_schmt = xm2cfgd.schmt_en;
+	scratch2.memory_type = sdram.memory_type;
+	writel(scratch2.word, &pmc->pmc_scratch2);
+
+	/* collect data from various sources for pmc_scratch4 */
+	fbio_spare.word = readl(&emc->fbio_spare);
+	scratch4.word = 0;
+	scratch4.emc_fbio_spare_cfg_wb0 = fbio_spare.cfg_wb0;
+	scratch4.emc_clock_divider = sdram.emc_clock_divider;
+	scratch4.pllm_stable_time = -1;
+	scratch4.pllx_stable_time = -1;
+	writel(scratch4.word, &pmc->pmc_scratch4);
+
+	/* collect various data from sdram for pmc_scratch24 */
+	scratch24.word = 0;
+	scratch24.emc_pin_program_wait = sdram.emc_pin_program_wait;
+	scratch24.emc_auto_cal_wait = sdram.emc_auto_cal_wait;
+	scratch24.warmboot_wait = sdram.warm_boot_wait;
+	writel(scratch24.word, &pmc->pmc_scratch24);
+
+	return 0;
+}
+
+static u32 get_major_version(void)
+{
+	u32 major_id;
+	struct apb_misc_gp_ctlr *gp =
+		(struct apb_misc_gp_ctlr *)NV_PA_APB_MISC_GP_BASE;
+
+	major_id = (readl(&gp->hidrev) & HIDREV_MAJORPREV_MASK) >>
+			HIDREV_MAJORPREV_SHIFT;
+	return major_id;
+}
+
+static int is_production_mode_fuse_set(struct fuse_regs *fuse)
+{
+	return readl(&fuse->production_mode);
+}
+
+static int is_odm_production_mode_fuse_set(struct fuse_regs *fuse)
+{
+	return readl(&fuse->security_mode);
+}
+
+static int is_failure_analysis_mode(struct fuse_regs *fuse)
+{
+	return readl(&fuse->fa);
+}
+
+static int ap20_is_odm_production_mode(void)
+{
+	struct fuse_regs *fuse = (struct fuse_regs *)NV_PA_FUSE_BASE;
+
+	if (!is_failure_analysis_mode(fuse) &&
+	    is_odm_production_mode_fuse_set(fuse))
+		return 1;
+	else
+		return 0;
+}
+
+static int ap20_is_production_mode(void)
+{
+	struct fuse_regs *fuse = (struct fuse_regs *)NV_PA_FUSE_BASE;
+
+	if (get_major_version() == 0)
+		return 1;
+
+	if (!is_failure_analysis_mode(fuse) &&
+	    is_production_mode_fuse_set(fuse) &&
+	    !is_odm_production_mode_fuse_set(fuse))
+		return 1;
+	else
+		return 0;
+}
+
+static enum fuse_operating_mode fuse_get_operation_mode(void)
+{
+	u32 chip_id;
+	struct apb_misc_gp_ctlr *gp =
+		(struct apb_misc_gp_ctlr *)NV_PA_APB_MISC_GP_BASE;
+
+	chip_id = (readl(&gp->hidrev) & HIDREV_CHIPID_MASK) >>
+			HIDREV_CHIPID_SHIFT;
+	if (chip_id == CHIPID_TEGRA20) {
+		if (ap20_is_odm_production_mode()) {
+			printf("!! odm_production_mode is not supported !!\n");
+			return MODE_UNDEFINED;
+		} else
+			if (ap20_is_production_mode())
+				return MODE_PRODUCTION;
+			else
+				return MODE_UNDEFINED;
+	}
+	return MODE_UNDEFINED;
+}
+
+static void determine_crypto_options(int *is_encrypted, int *is_signed,
+				     int *use_zero_key)
+{
+	switch (fuse_get_operation_mode()) {
+	case MODE_PRODUCTION:
+		*is_encrypted = 0;
+		*is_signed = 1;
+		*use_zero_key = 1;
+		break;
+	case MODE_UNDEFINED:
+	default:
+		*is_encrypted = 0;
+		*is_signed = 0;
+		*use_zero_key  = 0;
+		break;
+	}
+}
+
+static int sign_wb_code(u32 start, u32 length, int use_zero_key)
+{
+	int err;
+	u8 *source;		/* Pointer to source */
+	u8 *hash;
+
+	/* Calculate AES block parameters. */
+	source = (u8 *)(start + offsetof(struct wb_header, random_aes_block));
+	length -= offsetof(struct wb_header, random_aes_block);
+	hash = (u8 *)(start + offsetof(struct wb_header, hash));
+	err = sign_data_block(source, length, hash);
+
+	return err;
+}
+
+int warmboot_prepare_code(u32 seg_address, u32 seg_length)
+{
+	int err = 0;
+	u32 length;			/* length of the signed/encrypt code */
+	struct wb_header *dst_header;	/* Pointer to dest WB header */
+	int is_encrypted;		/* Segment is encrypted */
+	int is_signed;			/* Segment is signed */
+	int use_zero_key;		/* Use key of all zeros */
+
+	/* Determine crypto options. */
+	determine_crypto_options(&is_encrypted, &is_signed, &use_zero_key);
+
+	/* Get the actual code limits. */
+	length = roundup(((u32)wb_end - (u32)wb_start), 16);
+
+	/*
+	 * The region specified by seg_address must be in SDRAM and must be
+	 * nonzero in length.
+	 */
+	if (seg_length == 0 || seg_address < NV_PA_SDRAM_BASE ||
+		seg_address + seg_length >= NV_PA_SDRAM_BASE + gd->ram_size) {
+		err = -EFAULT;
+		goto fail;
+	}
+
+	/* Things must be 16-byte aligned. */
+	if ((seg_length & 0xF) || (seg_address & 0xF)) {
+		err = -EINVAL;
+		goto fail;
+	}
+
+	/* Will the code fit? (destination includes wb_header + wb code) */
+	if (seg_length < (length + sizeof(struct wb_header))) {
+		err = -EINVAL;
+		goto fail;
+	}
+
+	dst_header = (struct wb_header *)seg_address;
+	memset((char *)dst_header, 0, sizeof(struct wb_header));
+
+	/* Populate the random_aes_block as requested. */
+	{
+		u32 *aes_block = (u32 *)&(dst_header->random_aes_block);
+		u32 *end = (u32 *)(((u32)aes_block) +
+				   sizeof(dst_header->random_aes_block));
+
+		do {
+			*aes_block++ = 0;
+		} while (aes_block < end);
+	}
+
+	/* Populate the header. */
+	dst_header->length_insecure = length + sizeof(struct wb_header);
+	dst_header->length_secure = length + sizeof(struct wb_header);
+	dst_header->destination = NV_WB_RUN_ADDRESS;
+	dst_header->entry_point = NV_WB_RUN_ADDRESS;
+	dst_header->code_length = length;
+
+	if (is_encrypted) {
+		printf("!!!! Encryption is not supported !!!!\n");
+		dst_header->length_insecure = 0;
+		err = -EACCES;
+		goto fail;
+	} else
+		/* copy the wb code directly following dst_header. */
+		memcpy((char *)(dst_header+1), (char *)wb_start, length);
+
+	if (is_signed)
+		err = sign_wb_code(seg_address, dst_header->length_insecure,
+				   use_zero_key);
+
+fail:
+	if (err)
+		printf("Warning: warmboot code copy failed (error=%d)\n", err);
+
+	return err;
+}

source/bootloader/u-boot-2020.01/arch/arm/mach-tegra/tegra20/warmboot_avp.c

@@ -0,0 +1,235 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2010 - 2011
+ * NVIDIA Corporation <www.nvidia.com>
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/flow.h>
+#include <asm/arch/pinmux.h>
+#include <asm/arch/tegra.h>
+#include <asm/arch-tegra/ap.h>
+#include <asm/arch-tegra/apb_misc.h>
+#include <asm/arch-tegra/clk_rst.h>
+#include <asm/arch-tegra/pmc.h>
+#include <asm/arch-tegra/warmboot.h>
+#include "warmboot_avp.h"
+
+#define DEBUG_RESET_CORESIGHT
+
+void wb_start(void)
+{
+	struct apb_misc_pp_ctlr *apb_misc =
+				(struct apb_misc_pp_ctlr *)NV_PA_APB_MISC_BASE;
+	struct pmc_ctlr *pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE;
+	struct flow_ctlr *flow = (struct flow_ctlr *)NV_PA_FLOW_BASE;
+	struct clk_rst_ctlr *clkrst =
+			(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+	union osc_ctrl_reg osc_ctrl;
+	union pllx_base_reg pllx_base;
+	union pllx_misc_reg pllx_misc;
+	union scratch3_reg scratch3;
+	u32 reg;
+
+	/* enable JTAG & TBE */
+	writel(CONFIG_CTL_TBE | CONFIG_CTL_JTAG, &apb_misc->cfg_ctl);
+
+	/* Are we running where we're supposed to be? */
+	asm volatile (
+		"adr	%0, wb_start;"	/* reg: wb_start address */
+		: "=r"(reg)		/* output */
+					/* no input, no clobber list */
+	);
+
+	if (reg != NV_WB_RUN_ADDRESS)
+		goto do_reset;
+
+	/* Are we running with AVP? */
+	if (readl(NV_PA_PG_UP_BASE + PG_UP_TAG_0) != PG_UP_TAG_AVP)
+		goto do_reset;
+
+#ifdef DEBUG_RESET_CORESIGHT
+	/* Assert CoreSight reset */
+	reg = readl(&clkrst->crc_rst_dev[TEGRA_DEV_U]);
+	reg |= SWR_CSITE_RST;
+	writel(reg, &clkrst->crc_rst_dev[TEGRA_DEV_U]);
+#endif
+
+	/* TODO: Set the drive strength - maybe make this a board parameter? */
+	osc_ctrl.word = readl(&clkrst->crc_osc_ctrl);
+	osc_ctrl.xofs = 4;
+	osc_ctrl.xoe = 1;
+	writel(osc_ctrl.word, &clkrst->crc_osc_ctrl);
+
+	/* Power up the CPU complex if necessary */
+	if (!(readl(&pmc->pmc_pwrgate_status) & PWRGATE_STATUS_CPU)) {
+		reg = PWRGATE_TOGGLE_PARTID_CPU | PWRGATE_TOGGLE_START;
+		writel(reg, &pmc->pmc_pwrgate_toggle);
+		while (!(readl(&pmc->pmc_pwrgate_status) & PWRGATE_STATUS_CPU))
+			;
+	}
+
+	/* Remove the I/O clamps from the CPU power partition. */
+	reg = readl(&pmc->pmc_remove_clamping);
+	reg |= CPU_CLMP;
+	writel(reg, &pmc->pmc_remove_clamping);
+
+	reg = EVENT_ZERO_VAL_20 | EVENT_MSEC | EVENT_MODE_STOP;
+	writel(reg, &flow->halt_cop_events);
+
+	/* Assert CPU complex reset */
+	reg = readl(&clkrst->crc_rst_dev[TEGRA_DEV_L]);
+	reg |= CPU_RST;
+	writel(reg, &clkrst->crc_rst_dev[TEGRA_DEV_L]);
+
+	/* Hold both CPUs in reset */
+	reg = CPU_CMPLX_CPURESET0 | CPU_CMPLX_CPURESET1 | CPU_CMPLX_DERESET0 |
+	      CPU_CMPLX_DERESET1 | CPU_CMPLX_DBGRESET0 | CPU_CMPLX_DBGRESET1;
+	writel(reg, &clkrst->crc_cpu_cmplx_set);
+
+	/* Halt CPU1 at the flow controller for uni-processor configurations */
+	writel(EVENT_MODE_STOP, &flow->halt_cpu1_events);
+
+	/*
+	 * Set the CPU reset vector. SCRATCH41 contains the physical
+	 * address of the CPU-side restoration code.
+	 */
+	reg = readl(&pmc->pmc_scratch41);
+	writel(reg, EXCEP_VECTOR_CPU_RESET_VECTOR);
+
+	/* Select CPU complex clock source */
+	writel(CCLK_PLLP_BURST_POLICY, &clkrst->crc_cclk_brst_pol);
+
+	/* Start the CPU0 clock and stop the CPU1 clock */
+	reg = CPU_CMPLX_CPU_BRIDGE_CLKDIV_4 | CPU_CMPLX_CPU0_CLK_STP_RUN |
+	      CPU_CMPLX_CPU1_CLK_STP_STOP;
+	writel(reg, &clkrst->crc_clk_cpu_cmplx);
+
+	/* Enable the CPU complex clock */
+	reg = readl(&clkrst->crc_clk_out_enb[TEGRA_DEV_L]);
+	reg |= CLK_ENB_CPU;
+	writel(reg, &clkrst->crc_clk_out_enb[TEGRA_DEV_L]);
+
+	/* Make sure the resets were held for at least 2 microseconds */
+	reg = readl(TIMER_USEC_CNTR);
+	while (readl(TIMER_USEC_CNTR) <= (reg + 2))
+		;
+
+#ifdef DEBUG_RESET_CORESIGHT
+	/*
+	 * De-assert CoreSight reset.
+	 * NOTE: We're leaving the CoreSight clock on the oscillator for
+	 *	now. It will be restored to its original clock source
+	 *	when the CPU-side restoration code runs.
+	 */
+	reg = readl(&clkrst->crc_rst_dev[TEGRA_DEV_U]);
+	reg &= ~SWR_CSITE_RST;
+	writel(reg, &clkrst->crc_rst_dev[TEGRA_DEV_U]);
+#endif
+
+	/* Unlock the CPU CoreSight interfaces */
+	reg = 0xC5ACCE55;
+	writel(reg, CSITE_CPU_DBG0_LAR);
+	writel(reg, CSITE_CPU_DBG1_LAR);
+
+	/*
+	 * Sample the microsecond timestamp again. This is the time we must
+	 * use when returning from LP0 for PLL stabilization delays.
+	 */
+	reg = readl(TIMER_USEC_CNTR);
+	writel(reg, &pmc->pmc_scratch1);
+
+	pllx_base.word = 0;
+	pllx_misc.word = 0;
+	scratch3.word = readl(&pmc->pmc_scratch3);
+
+	/* Get the OSC. For 19.2 MHz, use 19 to make the calculations easier */
+	reg = (readl(TIMER_USEC_CFG) & USEC_CFG_DIVISOR_MASK) + 1;
+
+	/*
+	 * According to the TRM, for 19.2MHz OSC, the USEC_DIVISOR is 0x5f, and
+	 * USEC_DIVIDEND is 0x04. So, if USEC_DIVISOR > 26, OSC is 19.2 MHz.
+	 *
+	 * reg is used to calculate the pllx freq, which is used to determine if
+	 * to set dccon or not.
+	 */
+	if (reg > 26)
+		reg = 19;
+
+	/* PLLX_BASE.PLLX_DIVM */
+	if (scratch3.pllx_base_divm == reg)
+		reg = 0;
+	else
+		reg = 1;
+
+	/* PLLX_BASE.PLLX_DIVN */
+	pllx_base.divn = scratch3.pllx_base_divn;
+	reg = scratch3.pllx_base_divn << reg;
+
+	/* PLLX_BASE.PLLX_DIVP */
+	pllx_base.divp = scratch3.pllx_base_divp;
+	reg = reg >> scratch3.pllx_base_divp;
+
+	pllx_base.bypass = 1;
+
+	/* PLLX_MISC_DCCON must be set for pllx frequency > 600 MHz. */
+	if (reg > 600)
+		pllx_misc.dccon = 1;
+
+	/* PLLX_MISC_LFCON */
+	pllx_misc.lfcon = scratch3.pllx_misc_lfcon;
+
+	/* PLLX_MISC_CPCON */
+	pllx_misc.cpcon = scratch3.pllx_misc_cpcon;
+
+	writel(pllx_misc.word, &clkrst->crc_pll_simple[SIMPLE_PLLX].pll_misc);
+	writel(pllx_base.word, &clkrst->crc_pll_simple[SIMPLE_PLLX].pll_base);
+
+	pllx_base.enable = 1;
+	writel(pllx_base.word, &clkrst->crc_pll_simple[SIMPLE_PLLX].pll_base);
+	pllx_base.bypass = 0;
+	writel(pllx_base.word, &clkrst->crc_pll_simple[SIMPLE_PLLX].pll_base);
+
+	writel(0, flow->halt_cpu_events);
+
+	reg = CPU_CMPLX_CPURESET0 | CPU_CMPLX_DBGRESET0 | CPU_CMPLX_DERESET0;
+	writel(reg, &clkrst->crc_cpu_cmplx_clr);
+
+	reg = PLLM_OUT1_RSTN_RESET_DISABLE | PLLM_OUT1_CLKEN_ENABLE |
+	      PLLM_OUT1_RATIO_VAL_8;
+	writel(reg, &clkrst->crc_pll[CLOCK_ID_MEMORY].pll_out[0]);
+
+	reg = SCLK_SWAKE_FIQ_SRC_PLLM_OUT1 | SCLK_SWAKE_IRQ_SRC_PLLM_OUT1 |
+	      SCLK_SWAKE_RUN_SRC_PLLM_OUT1 | SCLK_SWAKE_IDLE_SRC_PLLM_OUT1 |
+	      SCLK_SYS_STATE_IDLE;
+	writel(reg, &clkrst->crc_sclk_brst_pol);
+
+	/* avp_resume: no return after the write */
+	reg = readl(&clkrst->crc_rst_dev[TEGRA_DEV_L]);
+	reg &= ~CPU_RST;
+	writel(reg, &clkrst->crc_rst_dev[TEGRA_DEV_L]);
+
+	/* avp_halt: */
+avp_halt:
+	reg = EVENT_MODE_STOP | EVENT_JTAG;
+	writel(reg, flow->halt_cop_events);
+	goto avp_halt;
+
+do_reset:
+	/*
+	 * Execution comes here if something goes wrong. The chip is reset and
+	 * a cold boot is performed.
+	 */
+	writel(SWR_TRIG_SYS_RST, &clkrst->crc_rst_dev[TEGRA_DEV_L]);
+	goto do_reset;
+}
+
+/*
+ * wb_end() is a dummy function, and must be directly following wb_start(),
+ * and is used to calculate the size of wb_start().
+ */
+void wb_end(void)
+{
+}

source/bootloader/u-boot-2020.01/arch/arm/mach-tegra/tegra20/warmboot_avp.h

@@ -0,0 +1,64 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2010, 2011
+ * NVIDIA Corporation <www.nvidia.com>
+ */
+
+#ifndef _WARMBOOT_AVP_H_
+#define _WARMBOOT_AVP_H_
+
+#define TEGRA_DEV_L			0
+#define TEGRA_DEV_H			1
+#define TEGRA_DEV_U			2
+
+#define SIMPLE_PLLX			(CLOCK_ID_XCPU - CLOCK_ID_FIRST_SIMPLE)
+#define SIMPLE_PLLE			(CLOCK_ID_EPCI - CLOCK_ID_FIRST_SIMPLE)
+
+#define TIMER_USEC_CNTR			(NV_PA_TMRUS_BASE + 0)
+#define TIMER_USEC_CFG			(NV_PA_TMRUS_BASE + 4)
+
+#define USEC_CFG_DIVISOR_MASK		0xffff
+
+#define CONFIG_CTL_TBE			(1 << 7)
+#define CONFIG_CTL_JTAG			(1 << 6)
+
+#define CPU_RST				(1 << 0)
+#define CLK_ENB_CPU			(1 << 0)
+#define SWR_TRIG_SYS_RST		(1 << 2)
+#define SWR_CSITE_RST			(1 << 9)
+
+#define PWRGATE_STATUS_CPU		(1 << 0)
+#define PWRGATE_TOGGLE_PARTID_CPU	(0 << 0)
+#define PWRGATE_TOGGLE_START		(1 << 8)
+
+#define CPU_CMPLX_CPU_BRIDGE_CLKDIV_4	(3 << 0)
+#define CPU_CMPLX_CPU0_CLK_STP_STOP	(1 << 8)
+#define CPU_CMPLX_CPU0_CLK_STP_RUN	(0 << 8)
+#define CPU_CMPLX_CPU1_CLK_STP_STOP	(1 << 9)
+#define CPU_CMPLX_CPU1_CLK_STP_RUN	(0 << 9)
+
+#define CPU_CMPLX_CPURESET0		(1 << 0)
+#define CPU_CMPLX_CPURESET1		(1 << 1)
+#define CPU_CMPLX_DERESET0		(1 << 4)
+#define CPU_CMPLX_DERESET1		(1 << 5)
+#define CPU_CMPLX_DBGRESET0		(1 << 12)
+#define CPU_CMPLX_DBGRESET1		(1 << 13)
+
+#define PLLM_OUT1_RSTN_RESET_DISABLE	(1 << 0)
+#define PLLM_OUT1_CLKEN_ENABLE		(1 << 1)
+#define PLLM_OUT1_RATIO_VAL_8		(8 << 8)
+
+#define SCLK_SYS_STATE_IDLE		(1 << 28)
+#define SCLK_SWAKE_FIQ_SRC_PLLM_OUT1	(7 << 12)
+#define SCLK_SWAKE_IRQ_SRC_PLLM_OUT1	(7 << 8)
+#define SCLK_SWAKE_RUN_SRC_PLLM_OUT1	(7 << 4)
+#define SCLK_SWAKE_IDLE_SRC_PLLM_OUT1	(7 << 0)
+
+#define EVENT_ZERO_VAL_20		(20 << 0)
+#define EVENT_MSEC			(1 << 24)
+#define EVENT_JTAG			(1 << 28)
+#define EVENT_MODE_STOP			(2 << 29)
+
+#define CCLK_PLLP_BURST_POLICY		0x20004444
+
+#endif