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

source/bootloader/u-boot-2020.01/arch/arm/include/asm/arch-aspeed/pinctrl.h

@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2017 Google, Inc
+ */
+#ifndef _ASM_ARCH_PERIPH_H
+#define _ASM_ARCH_PERIPH_H
+
+/*
+ * Peripherals supported by the hardware.
+ * These are used to specify pinctrl settings.
+ */
+
+enum periph_id {
+	PERIPH_ID_UART1,
+	PERIPH_ID_UART2,
+	PERIPH_ID_UART3,
+	PERIPH_ID_UART4,
+	PERIPH_ID_LPC,
+	PERIPH_ID_PWM0,
+	PERIPH_ID_PWM1,
+	PERIPH_ID_PWM2,
+	PERIPH_ID_PWM3,
+	PERIPH_ID_PWM4,
+	PERIPH_ID_PWM5,
+	PERIPH_ID_PWM6,
+	PERIPH_ID_PWM7,
+	PERIPH_ID_PWM8,
+	PERIPH_ID_MAC1,
+	PERIPH_ID_MAC2,
+	PERIPH_ID_VIDEO,
+	PERIPH_ID_SPI1,
+	PERIPH_ID_SPI2,
+	PERIPH_ID_I2C1,
+	PERIPH_ID_I2C2,
+	PERIPH_ID_I2C3,
+	PERIPH_ID_I2C4,
+	PERIPH_ID_I2C5,
+	PERIPH_ID_I2C6,
+	PERIPH_ID_I2C7,
+	PERIPH_ID_I2C8,
+	PERIPH_ID_I2C9,
+	PERIPH_ID_I2C10,
+	PERIPH_ID_I2C11,
+	PERIPH_ID_I2C12,
+	PERIPH_ID_I2C13,
+	PERIPH_ID_I2C14,
+	PERIPH_ID_SD1,
+	PERIPH_ID_SD2,
+};
+
+#endif  /* _ASM_ARCH_SCU_AST2500_H */

source/bootloader/u-boot-2020.01/arch/arm/include/asm/arch-aspeed/scu_ast2500.h

@@ -0,0 +1,247 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2016 Google, Inc
+ */
+#ifndef _ASM_ARCH_SCU_AST2500_H
+#define _ASM_ARCH_SCU_AST2500_H
+
+#define SCU_UNLOCK_VALUE		0x1688a8a8
+
+#define SCU_HWSTRAP_VGAMEM_SHIFT	2
+#define SCU_HWSTRAP_VGAMEM_MASK		(3 << SCU_HWSTRAP_VGAMEM_SHIFT)
+#define SCU_HWSTRAP_MAC1_RGMII		(1 << 6)
+#define SCU_HWSTRAP_MAC2_RGMII		(1 << 7)
+#define SCU_HWSTRAP_DDR4		(1 << 24)
+#define SCU_HWSTRAP_CLKIN_25MHZ		(1 << 23)
+
+#define SCU_MPLL_DENUM_SHIFT		0
+#define SCU_MPLL_DENUM_MASK		0x1f
+#define SCU_MPLL_NUM_SHIFT		5
+#define SCU_MPLL_NUM_MASK		(0xff << SCU_MPLL_NUM_SHIFT)
+#define SCU_MPLL_POST_SHIFT		13
+#define SCU_MPLL_POST_MASK		(0x3f << SCU_MPLL_POST_SHIFT)
+#define SCU_PCLK_DIV_SHIFT		23
+#define SCU_PCLK_DIV_MASK		(7 << SCU_PCLK_DIV_SHIFT)
+#define SCU_SDCLK_DIV_SHIFT		12
+#define SCU_SDCLK_DIV_MASK		(7 << SCU_SDCLK_DIV_SHIFT)
+#define SCU_HPLL_DENUM_SHIFT		0
+#define SCU_HPLL_DENUM_MASK		0x1f
+#define SCU_HPLL_NUM_SHIFT		5
+#define SCU_HPLL_NUM_MASK		(0xff << SCU_HPLL_NUM_SHIFT)
+#define SCU_HPLL_POST_SHIFT		13
+#define SCU_HPLL_POST_MASK		(0x3f << SCU_HPLL_POST_SHIFT)
+
+#define SCU_MACCLK_SHIFT		16
+#define SCU_MACCLK_MASK			(7 << SCU_MACCLK_SHIFT)
+
+#define SCU_MISC2_RGMII_HPLL		(1 << 23)
+#define SCU_MISC2_RGMII_CLKDIV_SHIFT	20
+#define SCU_MISC2_RGMII_CLKDIV_MASK	(3 << SCU_MISC2_RGMII_CLKDIV_SHIFT)
+#define SCU_MISC2_RMII_MPLL		(1 << 19)
+#define SCU_MISC2_RMII_CLKDIV_SHIFT	16
+#define SCU_MISC2_RMII_CLKDIV_MASK	(3 << SCU_MISC2_RMII_CLKDIV_SHIFT)
+#define SCU_MISC2_UARTCLK_SHIFT		24
+
+#define SCU_MISC_D2PLL_OFF		(1 << 4)
+#define SCU_MISC_UARTCLK_DIV13		(1 << 12)
+#define SCU_MISC_GCRT_USB20CLK		(1 << 21)
+
+#define SCU_MICDS_MAC1RGMII_TXDLY_SHIFT	0
+#define SCU_MICDS_MAC1RGMII_TXDLY_MASK	(0x3f\
+					 << SCU_MICDS_MAC1RGMII_TXDLY_SHIFT)
+#define SCU_MICDS_MAC2RGMII_TXDLY_SHIFT	6
+#define SCU_MICDS_MAC2RGMII_TXDLY_MASK	(0x3f\
+					 << SCU_MICDS_MAC2RGMII_TXDLY_SHIFT)
+#define SCU_MICDS_MAC1RMII_RDLY_SHIFT	12
+#define SCU_MICDS_MAC1RMII_RDLY_MASK	(0x3f << SCU_MICDS_MAC1RMII_RDLY_SHIFT)
+#define SCU_MICDS_MAC2RMII_RDLY_SHIFT	18
+#define SCU_MICDS_MAC2RMII_RDLY_MASK	(0x3f << SCU_MICDS_MAC2RMII_RDLY_SHIFT)
+#define SCU_MICDS_MAC1RMII_TXFALL	(1 << 24)
+#define SCU_MICDS_MAC2RMII_TXFALL	(1 << 25)
+#define SCU_MICDS_RMII1_RCLKEN		(1 << 29)
+#define SCU_MICDS_RMII2_RCLKEN		(1 << 30)
+#define SCU_MICDS_RGMIIPLL		(1 << 31)
+
+/*
+ * SYSRESET is actually more like a Power register,
+ * except that corresponding bit set to 1 means that
+ * the peripheral is off.
+ */
+#define SCU_SYSRESET_XDMA		(1 << 25)
+#define SCU_SYSRESET_MCTP		(1 << 24)
+#define SCU_SYSRESET_ADC		(1 << 23)
+#define SCU_SYSRESET_JTAG		(1 << 22)
+#define SCU_SYSRESET_MIC		(1 << 18)
+#define SCU_SYSRESET_SDIO		(1 << 16)
+#define SCU_SYSRESET_USB11HOST		(1 << 15)
+#define SCU_SYSRESET_USBHUB		(1 << 14)
+#define SCU_SYSRESET_CRT		(1 << 13)
+#define SCU_SYSRESET_MAC2		(1 << 12)
+#define SCU_SYSRESET_MAC1		(1 << 11)
+#define SCU_SYSRESET_PECI		(1 << 10)
+#define SCU_SYSRESET_PWM		(1 << 9)
+#define SCU_SYSRESET_PCI_VGA		(1 << 8)
+#define SCU_SYSRESET_2D			(1 << 7)
+#define SCU_SYSRESET_VIDEO		(1 << 6)
+#define SCU_SYSRESET_LPC		(1 << 5)
+#define SCU_SYSRESET_HAC		(1 << 4)
+#define SCU_SYSRESET_USBHID		(1 << 3)
+#define SCU_SYSRESET_I2C		(1 << 2)
+#define SCU_SYSRESET_AHB		(1 << 1)
+#define SCU_SYSRESET_SDRAM_WDT		(1 << 0)
+
+/* Bits 16-27 in the register control pin functions for I2C devices 3-14 */
+#define SCU_PINMUX_CTRL5_I2C		(1 << 16)
+
+/*
+ * The values are grouped by function, not by register.
+ * They are actually scattered across multiple loosely related registers.
+ */
+#define SCU_PIN_FUN_MAC1_MDC		(1 << 30)
+#define SCU_PIN_FUN_MAC1_MDIO		(1 << 31)
+#define SCU_PIN_FUN_MAC1_PHY_LINK	(1 << 0)
+#define SCU_PIN_FUN_MAC2_MDIO		(1 << 2)
+#define SCU_PIN_FUN_MAC2_PHY_LINK	(1 << 1)
+#define SCU_PIN_FUN_SCL1		(1 << 12)
+#define SCU_PIN_FUN_SCL2		(1 << 14)
+#define SCU_PIN_FUN_SDA1		(1 << 13)
+#define SCU_PIN_FUN_SDA2		(1 << 15)
+
+#define SCU_CLKSTOP_MAC1		(1 << 20)
+#define SCU_CLKSTOP_MAC2		(1 << 21)
+#define SCU_CLKSTOP_SDCLK		(1 << 27)
+
+#define SCU_D2PLL_EXT1_OFF		(1 << 0)
+#define SCU_D2PLL_EXT1_BYPASS		(1 << 1)
+#define SCU_D2PLL_EXT1_RESET		(1 << 2)
+#define SCU_D2PLL_EXT1_MODE_SHIFT	3
+#define SCU_D2PLL_EXT1_MODE_MASK	(3 << SCU_D2PLL_EXT1_MODE_SHIFT)
+#define SCU_D2PLL_EXT1_PARAM_SHIFT	5
+#define SCU_D2PLL_EXT1_PARAM_MASK	(0x1ff << SCU_D2PLL_EXT1_PARAM_SHIFT)
+
+#define SCU_D2PLL_NUM_SHIFT		0
+#define SCU_D2PLL_NUM_MASK		(0xff << SCU_D2PLL_NUM_SHIFT)
+#define SCU_D2PLL_DENUM_SHIFT		8
+#define SCU_D2PLL_DENUM_MASK		(0x1f << SCU_D2PLL_DENUM_SHIFT)
+#define SCU_D2PLL_POST_SHIFT		13
+#define SCU_D2PLL_POST_MASK		(0x3f << SCU_D2PLL_POST_SHIFT)
+#define SCU_D2PLL_ODIV_SHIFT		19
+#define SCU_D2PLL_ODIV_MASK		(7 << SCU_D2PLL_ODIV_SHIFT)
+#define SCU_D2PLL_SIC_SHIFT		22
+#define SCU_D2PLL_SIC_MASK		(0x1f << SCU_D2PLL_SIC_SHIFT)
+#define SCU_D2PLL_SIP_SHIFT		27
+#define SCU_D2PLL_SIP_MASK		(0x1f << SCU_D2PLL_SIP_SHIFT)
+
+#define SCU_CLKDUTY_DCLK_SHIFT		0
+#define SCU_CLKDUTY_DCLK_MASK		(0x3f << SCU_CLKDUTY_DCLK_SHIFT)
+#define SCU_CLKDUTY_RGMII1TXCK_SHIFT	8
+#define SCU_CLKDUTY_RGMII1TXCK_MASK	(0x7f << SCU_CLKDUTY_RGMII1TXCK_SHIFT)
+#define SCU_CLKDUTY_RGMII2TXCK_SHIFT	16
+#define SCU_CLKDUTY_RGMII2TXCK_MASK	(0x7f << SCU_CLKDUTY_RGMII2TXCK_SHIFT)
+
+#ifndef __ASSEMBLY__
+
+struct ast2500_clk_priv {
+	struct ast2500_scu *scu;
+};
+
+struct ast2500_scu {
+	u32 protection_key;
+	u32 sysreset_ctrl1;
+	u32 clk_sel1;
+	u32 clk_stop_ctrl1;
+	u32 freq_counter_ctrl;
+	u32 freq_counter_cmp;
+	u32 intr_ctrl;
+	u32 d2_pll_param;
+	u32 m_pll_param;
+	u32 h_pll_param;
+	u32 d_pll_param;
+	u32 misc_ctrl1;
+	u32 pci_config[3];
+	u32 sysreset_status;
+	u32 vga_handshake[2];
+	u32 mac_clk_delay;
+	u32 misc_ctrl2;
+	u32 vga_scratch[8];
+	u32 hwstrap;
+	u32 rng_ctrl;
+	u32 rng_data;
+	u32 rev_id;
+	u32 pinmux_ctrl[6];
+	u32 reserved0;
+	u32 extrst_sel;
+	u32 pinmux_ctrl1[4];
+	u32 reserved1[2];
+	u32 mac_clk_delay_100M;
+	u32 mac_clk_delay_10M;
+	u32 wakeup_enable;
+	u32 wakeup_control;
+	u32 reserved2[3];
+	u32 sysreset_ctrl2;
+	u32 clk_sel2;
+	u32 clk_stop_ctrl2;
+	u32 freerun_counter;
+	u32 freerun_counter_ext;
+	u32 clk_duty_meas_ctrl;
+	u32 clk_duty_meas_res;
+	u32 reserved3[4];
+	/* The next registers are not key-protected */
+	struct ast2500_cpu2 {
+		u32 ctrl;
+		u32 base_addr[9];
+		u32 cache_ctrl;
+	} cpu2;
+	u32 reserved4;
+	u32 d_pll_ext_param[3];
+	u32 d2_pll_ext_param[3];
+	u32 mh_pll_ext_param;
+	u32 reserved5;
+	u32 chip_id[2];
+	u32 reserved6[2];
+	u32 uart_clk_ctrl;
+	u32 reserved7[7];
+	u32 pcie_config;
+	u32 mmio_decode;
+	u32 reloc_ctrl_decode[2];
+	u32 mailbox_addr;
+	u32 shared_sram_decode[2];
+	u32 bmc_rev_id;
+	u32 reserved8;
+	u32 bmc_device_id;
+	u32 reserved9[13];
+	u32 clk_duty_sel;
+};
+
+/**
+ * ast_get_clk() - get a pointer to Clock Driver
+ *
+ * @devp, OUT - pointer to Clock Driver
+ * @return zero on success, error code (< 0) otherwise.
+ */
+int ast_get_clk(struct udevice **devp);
+
+/**
+ * ast_get_scu() - get a pointer to SCU registers
+ *
+ * @return pointer to struct ast2500_scu on success, ERR_PTR otherwise
+ */
+void *ast_get_scu(void);
+
+/**
+ * ast_scu_unlock() - unlock protected registers
+ *
+ * @scu, pointer to ast2500_scu
+ */
+void ast_scu_unlock(struct ast2500_scu *scu);
+
+/**
+ * ast_scu_lock() - lock protected registers
+ *
+ * @scu, pointer to ast2500_scu
+ */
+void ast_scu_lock(struct ast2500_scu *scu);
+
+#endif  /* __ASSEMBLY__ */
+
+#endif  /* _ASM_ARCH_SCU_AST2500_H */

source/bootloader/u-boot-2020.01/arch/arm/include/asm/arch-aspeed/sdram_ast2500.h

@@ -0,0 +1,137 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2016 Google, Inc
+ */
+#ifndef _ASM_ARCH_SDRAM_AST2500_H
+#define _ASM_ARCH_SDRAM_AST2500_H
+
+#define SDRAM_UNLOCK_KEY		0xfc600309
+#define SDRAM_VIDEO_UNLOCK_KEY		0x2003000f
+
+#define SDRAM_PCR_CKE_EN		(1 << 0)
+#define SDRAM_PCR_AUTOPWRDN_EN		(1 << 1)
+#define SDRAM_PCR_CKE_DELAY_SHIFT	4
+#define SDRAM_PCR_CKE_DELAY_MASK	7
+#define SDRAM_PCR_RESETN_DIS		(1 << 7)
+#define SDRAM_PCR_ODT_EN		(1 << 8)
+#define SDRAM_PCR_ODT_AUTO_ON		(1 << 10)
+#define SDRAM_PCR_ODT_EXT_EN		(1 << 11)
+#define SDRAM_PCR_TCKE_PW_SHIFT		12
+#define SDRAM_PCR_TCKE_PW_MASK		7
+#define SDRAM_PCR_RGAP_CTRL_EN		(1 << 15)
+#define SDRAM_PCR_MREQI_DIS		(1 << 17)
+
+/* Fixed priority DRAM Requests mask */
+#define SDRAM_REQ_VGA_HW_CURSOR		(1 << 0)
+#define SDRAM_REQ_VGA_TEXT_CG_FONT	(1 << 1)
+#define SDRAM_REQ_VGA_TEXT_ASCII	(1 << 2)
+#define SDRAM_REQ_VGA_CRT		(1 << 3)
+#define SDRAM_REQ_SOC_DC_CURSOR		(1 << 4)
+#define SDRAM_REQ_SOC_DC_OCD		(1 << 5)
+#define SDRAM_REQ_SOC_DC_CRT		(1 << 6)
+#define SDRAM_REQ_VIDEO_HIPRI_WRITE	(1 << 7)
+#define SDRAM_REQ_USB20_EHCI1		(1 << 8)
+#define SDRAM_REQ_USB20_EHCI2		(1 << 9)
+#define SDRAM_REQ_CPU			(1 << 10)
+#define SDRAM_REQ_AHB2			(1 << 11)
+#define SDRAM_REQ_AHB			(1 << 12)
+#define SDRAM_REQ_MAC0			(1 << 13)
+#define SDRAM_REQ_MAC1			(1 << 14)
+#define SDRAM_REQ_PCIE			(1 << 16)
+#define SDRAM_REQ_XDMA			(1 << 17)
+#define SDRAM_REQ_ENCRYPTION		(1 << 18)
+#define SDRAM_REQ_VIDEO_FLAG		(1 << 21)
+#define SDRAM_REQ_VIDEO_LOW_PRI_WRITE	(1 << 28)
+#define SDRAM_REQ_2D_RW			(1 << 29)
+#define SDRAM_REQ_MEMCHECK		(1 << 30)
+
+#define SDRAM_ICR_RESET_ALL		(1 << 31)
+
+#define SDRAM_CONF_CAP_SHIFT		0
+#define SDRAM_CONF_CAP_MASK		3
+#define SDRAM_CONF_DDR4			(1 << 4)
+#define SDRAM_CONF_SCRAMBLE		(1 << 8)
+#define SDRAM_CONF_SCRAMBLE_PAT2	(1 << 9)
+#define SDRAM_CONF_CACHE_EN		(1 << 10)
+#define SDRAM_CONF_CACHE_INIT_EN	(1 << 12)
+#define SDRAM_CONF_DUALX8		(1 << 13)
+#define SDRAM_CONF_CACHE_INIT_DONE	(1 << 19)
+
+#define SDRAM_CONF_CAP_128M		0
+#define SDRAM_CONF_CAP_256M		1
+#define SDRAM_CONF_CAP_512M		2
+#define SDRAM_CONF_CAP_1024M		3
+
+#define SDRAM_MISC_DDR4_TREFRESH	(1 << 3)
+
+#define SDRAM_PHYCTRL0_INIT		(1 << 0)
+#define SDRAM_PHYCTRL0_AUTO_UPDATE	(1 << 1)
+#define SDRAM_PHYCTRL0_NRST		(1 << 2)
+
+#define SDRAM_REFRESH_CYCLES_SHIFT	0
+#define SDRAM_REFRESH_CYCLES_MASK	0xf
+#define SDRAM_REFRESH_ZQCS_EN		(1 << 7)
+#define SDRAM_REFRESH_PERIOD_SHIFT	8
+#define SDRAM_REFRESH_PERIOD_MASK	0xf
+
+#define SDRAM_TEST_LEN_SHIFT		4
+#define SDRAM_TEST_LEN_MASK		0xfffff
+#define SDRAM_TEST_START_ADDR_SHIFT	24
+#define SDRAM_TEST_START_ADDR_MASK	0x3f
+
+#define SDRAM_TEST_EN			(1 << 0)
+#define SDRAM_TEST_MODE_SHIFT		1
+#define SDRAM_TEST_MODE_MASK		3
+#define SDRAM_TEST_MODE_WO		0
+#define SDRAM_TEST_MODE_RB		1
+#define SDRAM_TEST_MODE_RW		2
+#define SDRAM_TEST_GEN_MODE_SHIFT	3
+#define SDRAM_TEST_GEN_MODE_MASK	7
+#define SDRAM_TEST_TWO_MODES		(1 << 6)
+#define SDRAM_TEST_ERRSTOP		(1 << 7)
+#define SDRAM_TEST_DONE			(1 << 12)
+#define SDRAM_TEST_FAIL			(1 << 13)
+
+#define SDRAM_AC_TRFC_SHIFT		0
+#define SDRAM_AC_TRFC_MASK		0xff
+
+#ifndef __ASSEMBLY__
+
+struct ast2500_sdrammc_regs {
+	u32 protection_key;
+	u32 config;
+	u32 gm_protection_key;
+	u32 refresh_timing;
+	u32 ac_timing[3];
+	u32 misc_control;
+	u32 mr46_mode_setting;
+	u32 mr5_mode_setting;
+	u32 mode_setting_control;
+	u32 mr02_mode_setting;
+	u32 mr13_mode_setting;
+	u32 power_control;
+	u32 req_limit_mask;
+	u32 pri_group_setting;
+	u32 max_grant_len[4];
+	u32 intr_ctrl;
+	u32 ecc_range_ctrl;
+	u32 first_ecc_err_addr;
+	u32 last_ecc_err_addr;
+	u32 phy_ctrl[4];
+	u32 ecc_test_ctrl;
+	u32 test_addr;
+	u32 test_fail_dq_bit;
+	u32 test_init_val;
+	u32 phy_debug_ctrl;
+	u32 phy_debug_data;
+	u32 reserved1[30];
+	u32 scu_passwd;
+	u32 reserved2[7];
+	u32 scu_mpll;
+	u32 reserved3[19];
+	u32 scu_hwstrap;
+};
+
+#endif  /* __ASSEMBLY__ */
+
+#endif  /* _ASM_ARCH_SDRAM_AST2500_H */

source/bootloader/u-boot-2020.01/arch/arm/include/asm/arch-aspeed/timer.h

@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2016 Google, Inc
+ */
+#ifndef _ASM_ARCH_TIMER_H
+#define _ASM_ARCH_TIMER_H
+
+/* Each timer has 4 control bits in ctrl1 register.
+ * Timer1 uses bits 0:3, Timer2 uses bits 4:7 and so on,
+ * such that timer X uses bits (4 * X - 4):(4 * X - 1)
+ * If the timer does not support PWM, bit 4 is reserved.
+ */
+#define AST_TMC_EN			(1 << 0)
+#define AST_TMC_1MHZ			(1 << 1)
+#define AST_TMC_OVFINTR			(1 << 2)
+#define AST_TMC_PWM			(1 << 3)
+
+/* Timers are counted from 1 in the datasheet. */
+#define AST_TMC_CTRL1_SHIFT(n)			(4 * ((n) - 1))
+
+#define AST_TMC_RATE  (1000*1000)
+
+#ifndef __ASSEMBLY__
+
+/*
+ * All timers share control registers, which makes it harder to make them
+ * separate devices. Since only one timer is needed at the moment, making
+ * it this just one device.
+ */
+
+struct ast_timer_counter {
+	u32 status;
+	u32 reload_val;
+	u32 match1;
+	u32 match2;
+};
+
+struct ast_timer {
+	struct ast_timer_counter timers1[3];
+	u32 ctrl1;
+	u32 ctrl2;
+#ifdef CONFIG_ASPEED_AST2500
+	u32 ctrl3;
+	u32 ctrl1_clr;
+#else
+	u32 reserved[2];
+#endif
+	struct ast_timer_counter timers2[5];
+};
+
+#endif  /* __ASSEMBLY__ */
+
+#endif  /* _ASM_ARCH_TIMER_H */

source/bootloader/u-boot-2020.01/arch/arm/include/asm/arch-aspeed/wdt.h

@@ -0,0 +1,113 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2016 Google, Inc
+ */
+
+#ifndef _ASM_ARCH_WDT_H
+#define _ASM_ARCH_WDT_H
+
+#define WDT_BASE			0x1e785000
+
+/*
+ * Special value that needs to be written to counter_restart register to
+ * (re)start the timer
+ */
+#define WDT_COUNTER_RESTART_VAL		0x4755
+
+/* Control register */
+#define WDT_CTRL_RESET_MODE_SHIFT	5
+#define WDT_CTRL_RESET_MODE_MASK	3
+
+#define WDT_CTRL_EN			(1 << 0)
+#define WDT_CTRL_RESET			(1 << 1)
+#define WDT_CTRL_CLK1MHZ		(1 << 4)
+#define WDT_CTRL_2ND_BOOT		(1 << 7)
+
+/* Values for Reset Mode */
+#define WDT_CTRL_RESET_SOC		0
+#define WDT_CTRL_RESET_CHIP		1
+#define WDT_CTRL_RESET_CPU		2
+#define WDT_CTRL_RESET_MASK		3
+
+/* Reset Mask register */
+#define WDT_RESET_ARM			(1 << 0)
+#define WDT_RESET_COPROC		(1 << 1)
+#define WDT_RESET_SDRAM			(1 << 2)
+#define WDT_RESET_AHB			(1 << 3)
+#define WDT_RESET_I2C			(1 << 4)
+#define WDT_RESET_MAC1			(1 << 5)
+#define WDT_RESET_MAC2			(1 << 6)
+#define WDT_RESET_GCRT			(1 << 7)
+#define WDT_RESET_USB20			(1 << 8)
+#define WDT_RESET_USB11_HOST		(1 << 9)
+#define WDT_RESET_USB11_EHCI2		(1 << 10)
+#define WDT_RESET_VIDEO			(1 << 11)
+#define WDT_RESET_HAC			(1 << 12)
+#define WDT_RESET_LPC			(1 << 13)
+#define WDT_RESET_SDSDIO		(1 << 14)
+#define WDT_RESET_MIC			(1 << 15)
+#define WDT_RESET_CRT2C			(1 << 16)
+#define WDT_RESET_PWM			(1 << 17)
+#define WDT_RESET_PECI			(1 << 18)
+#define WDT_RESET_JTAG			(1 << 19)
+#define WDT_RESET_ADC			(1 << 20)
+#define WDT_RESET_GPIO			(1 << 21)
+#define WDT_RESET_MCTP			(1 << 22)
+#define WDT_RESET_XDMA			(1 << 23)
+#define WDT_RESET_SPI			(1 << 24)
+#define WDT_RESET_MISC			(1 << 25)
+
+#define WDT_RESET_DEFAULT						\
+	(WDT_RESET_ARM | WDT_RESET_COPROC | WDT_RESET_I2C |		\
+	 WDT_RESET_MAC1 | WDT_RESET_MAC2 | WDT_RESET_GCRT |		\
+	 WDT_RESET_USB20 | WDT_RESET_USB11_HOST | WDT_RESET_USB11_EHCI2 | \
+	 WDT_RESET_VIDEO | WDT_RESET_HAC | WDT_RESET_LPC |		\
+	 WDT_RESET_SDSDIO | WDT_RESET_MIC | WDT_RESET_CRT2C |		\
+	 WDT_RESET_PWM | WDT_RESET_PECI | WDT_RESET_JTAG |		\
+	 WDT_RESET_ADC | WDT_RESET_GPIO | WDT_RESET_MISC)
+
+#ifndef __ASSEMBLY__
+struct ast_wdt {
+	u32 counter_status;
+	u32 counter_reload_val;
+	u32 counter_restart;
+	u32 ctrl;
+	u32 timeout_status;
+	u32 clr_timeout_status;
+	u32 reset_width;
+	/* On pre-ast2500 SoCs this register is reserved. */
+	u32 reset_mask;
+};
+
+/**
+ * Given flags parameter passed to wdt_reset or wdt_start uclass functions,
+ * gets Reset Mode value from it.
+ *
+ * @flags: flags parameter passed into wdt_reset or wdt_start
+ * @return Reset Mode value
+ */
+u32 ast_reset_mode_from_flags(ulong flags);
+
+/**
+ * Given flags parameter passed to wdt_reset or wdt_start uclass functions,
+ * gets Reset Mask value from it. Reset Mask is only supported on ast2500
+ *
+ * @flags: flags parameter passed into wdt_reset or wdt_start
+ * @return Reset Mask value
+ */
+u32 ast_reset_mask_from_flags(ulong flags);
+
+/**
+ * Given Reset Mask and Reset Mode values, converts them to flags,
+ * suitable for passing into wdt_start or wdt_reset uclass functions.
+ *
+ * On ast2500 Reset Mask is 25 bits wide and Reset Mode is 2 bits wide, so they
+ * can both be packed into single 32 bits wide value.
+ *
+ * @reset_mode: Reset Mode
+ * @reset_mask: Reset Mask
+ */
+ulong ast_flags_from_reset_mode_mask(u32 reset_mode, u32 reset_mask);
+#endif  /* __ASSEMBLY__ */
+
+#endif /* _ASM_ARCH_WDT_H */