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

2026-09-06 03:52:57 +08:00
commit b1928b41c0
21813 changed files with 4413081 additions and 0 deletions
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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2016 Rockchip Electronics Co., Ltd
+ */
+
+#include <common.h>
+#include <asm/arch-rockchip/bootrom.h>
+#include <asm/arch-rockchip/hardware.h>
+#include <asm/arch-rockchip/grf_rk3328.h>
+#include <asm/arch-rockchip/uart.h>
+#include <asm/armv8/mmu.h>
+#include <asm/io.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define CRU_BASE		0xFF440000
+#define GRF_BASE		0xFF100000
+#define UART2_BASE		0xFF130000
+#define FW_DDR_CON_REG		0xFF7C0040
+
+const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = {
+	[BROM_BOOTSOURCE_EMMC] = "/rksdmmc@ff520000",
+	[BROM_BOOTSOURCE_SD] = "/rksdmmc@ff500000",
+};
+
+static struct mm_region rk3328_mem_map[] = {
+	{
+		.virt = 0x0UL,
+		.phys = 0x0UL,
+		.size = 0xff000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+			 PTE_BLOCK_INNER_SHARE
+	}, {
+		.virt = 0xff000000UL,
+		.phys = 0xff000000UL,
+		.size = 0x1000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE |
+			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	}, {
+		/* List terminator */
+		0,
+	}
+};
+
+struct mm_region *mem_map = rk3328_mem_map;
+
+int arch_cpu_init(void)
+{
+#ifdef CONFIG_SPL_BUILD
+	/* We do some SoC one time setting here. */
+
+	/* Disable the ddr secure region setting to make it non-secure */
+	rk_setreg(FW_DDR_CON_REG, 0x200);
+#endif
+	return 0;
+}
+
+void board_debug_uart_init(void)
+{
+	struct rk3328_grf_regs * const grf = (void *)GRF_BASE;
+	struct rk_uart * const uart = (void *)UART2_BASE;
+	enum{
+		GPIO2A0_SEL_SHIFT       = 0,
+		GPIO2A0_SEL_MASK        = 3 << GPIO2A0_SEL_SHIFT,
+		GPIO2A0_UART2_TX_M1     = 1,
+
+		GPIO2A1_SEL_SHIFT       = 2,
+		GPIO2A1_SEL_MASK        = 3 << GPIO2A1_SEL_SHIFT,
+		GPIO2A1_UART2_RX_M1     = 1,
+	};
+	enum {
+		IOMUX_SEL_UART2_SHIFT   = 0,
+		IOMUX_SEL_UART2_MASK    = 3 << IOMUX_SEL_UART2_SHIFT,
+		IOMUX_SEL_UART2_M0      = 0,
+		IOMUX_SEL_UART2_M1,
+	};
+
+	/* uart_sel_clk default select 24MHz */
+	writel((3 << (8 + 16)) | (2 << 8), CRU_BASE + 0x148);
+
+	/* init uart baud rate 1500000 */
+	writel(0x83, &uart->lcr);
+	writel(0x1, &uart->rbr);
+	writel(0x3, &uart->lcr);
+
+	/* Enable early UART2 */
+	rk_clrsetreg(&grf->com_iomux,
+		     IOMUX_SEL_UART2_MASK,
+		     IOMUX_SEL_UART2_M1 << IOMUX_SEL_UART2_SHIFT);
+	rk_clrsetreg(&grf->gpio2a_iomux,
+		     GPIO2A0_SEL_MASK,
+		     GPIO2A0_UART2_TX_M1 << GPIO2A0_SEL_SHIFT);
+	rk_clrsetreg(&grf->gpio2a_iomux,
+		     GPIO2A1_SEL_MASK,
+		     GPIO2A1_UART2_RX_M1 << GPIO2A1_SEL_SHIFT);
+
+	/* enable FIFO */
+	writel(0x1, &uart->sfe);
+}