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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);
}
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