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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2016 Rockchip Electronics Co., Ltd
* Copyright (c) 2016 Andreas Färber
*/
#include <common.h>
#include <init.h>
#include <syscon.h>
#include <asm/armv8/mmu.h>
#include <asm/io.h>
#include <asm/arch-rockchip/bootrom.h>
#include <asm/arch-rockchip/clock.h>
#include <asm/arch-rockchip/cru_rk3368.h>
#include <asm/arch-rockchip/grf_rk3368.h>
#include <asm/arch-rockchip/hardware.h>
DECLARE_GLOBAL_DATA_PTR;
#define IMEM_BASE 0xFF8C0000
/* Max MCU's SRAM value is 8K, begin at (IMEM_BASE + 4K) */
#define MCU_SRAM_BASE (IMEM_BASE + 1024 * 4)
#define MCU_SRAM_BASE_BIT31_BIT28 ((MCU_SRAM_BASE & GENMASK(31, 28)) >> 28)
#define MCU_SRAM_BASE_BIT27_BIT12 ((MCU_SRAM_BASE & GENMASK(27, 12)) >> 12)
/* exsram may using by mcu to accessing dram(0x0-0x20000000) */
#define MCU_EXSRAM_BASE (0)
#define MCU_EXSRAM_BASE_BIT31_BIT28 ((MCU_EXSRAM_BASE & GENMASK(31, 28)) >> 28)
#define MCU_EXSRAM_BASE_BIT27_BIT12 ((MCU_EXSRAM_BASE & GENMASK(27, 12)) >> 12)
/* experi no used, reserved value = 0 */
#define MCU_EXPERI_BASE (0)
#define MCU_EXPERI_BASE_BIT31_BIT28 ((MCU_EXPERI_BASE & GENMASK(31, 28)) >> 28)
#define MCU_EXPERI_BASE_BIT27_BIT12 ((MCU_EXPERI_BASE & GENMASK(27, 12)) >> 12)
static struct mm_region rk3368_mem_map[] = {
{
.virt = 0x0UL,
.phys = 0x0UL,
.size = 0x80000000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
PTE_BLOCK_INNER_SHARE
}, {
.virt = 0xf0000000UL,
.phys = 0xf0000000UL,
.size = 0x10000000UL,
.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 = rk3368_mem_map;
const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = {
[BROM_BOOTSOURCE_EMMC] = "/dwmmc@ff0f0000",
[BROM_BOOTSOURCE_SD] = "/dwmmc@ff0c0000",
};
#ifdef CONFIG_ARCH_EARLY_INIT_R
static int mcu_init(void)
{
struct rk3368_grf *grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
struct rk3368_cru *cru = rockchip_get_cru();
rk_clrsetreg(&grf->soc_con14, MCU_SRAM_BASE_BIT31_BIT28_MASK,
MCU_SRAM_BASE_BIT31_BIT28 << MCU_SRAM_BASE_BIT31_BIT28_SHIFT);
rk_clrsetreg(&grf->soc_con11, MCU_SRAM_BASE_BIT27_BIT12_MASK,
MCU_SRAM_BASE_BIT27_BIT12 << MCU_SRAM_BASE_BIT27_BIT12_SHIFT);
rk_clrsetreg(&grf->soc_con14, MCU_EXSRAM_BASE_BIT31_BIT28_MASK,
MCU_EXSRAM_BASE_BIT31_BIT28 << MCU_EXSRAM_BASE_BIT31_BIT28_SHIFT);
rk_clrsetreg(&grf->soc_con12, MCU_EXSRAM_BASE_BIT27_BIT12_MASK,
MCU_EXSRAM_BASE_BIT27_BIT12 << MCU_EXSRAM_BASE_BIT27_BIT12_SHIFT);
rk_clrsetreg(&grf->soc_con14, MCU_EXPERI_BASE_BIT31_BIT28_MASK,
MCU_EXPERI_BASE_BIT31_BIT28 << MCU_EXPERI_BASE_BIT31_BIT28_SHIFT);
rk_clrsetreg(&grf->soc_con13, MCU_EXPERI_BASE_BIT27_BIT12_MASK,
MCU_EXPERI_BASE_BIT27_BIT12 << MCU_EXPERI_BASE_BIT27_BIT12_SHIFT);
rk_clrsetreg(&cru->clksel_con[12], MCU_PLL_SEL_MASK | MCU_CLK_DIV_MASK,
(MCU_PLL_SEL_GPLL << MCU_PLL_SEL_SHIFT) |
(5 << MCU_CLK_DIV_SHIFT));
/* mcu dereset, for start running */
rk_clrreg(&cru->softrst_con[1], MCU_PO_SRST_MASK | MCU_SYS_SRST_MASK);
return 0;
}
int arch_early_init_r(void)
{
return mcu_init();
}
#endif
#ifdef CONFIG_SPL_BUILD
/*
* The SPL (and also the full U-Boot stage on the RK3368) will run in
* secure mode (i.e. EL3) and an ATF will eventually be booted before
* starting up the operating system... so we can initialize the SGRF
* here and rely on the ATF installing the final (secure) policy
* later.
*/
static inline uintptr_t sgrf_soc_con_addr(unsigned int no)
{
const uintptr_t SGRF_BASE =
(uintptr_t)syscon_get_first_range(ROCKCHIP_SYSCON_SGRF);
return SGRF_BASE + sizeof(u32) * no;
}
static inline uintptr_t sgrf_busdmac_addr(unsigned int no)
{
const uintptr_t SGRF_BASE =
(uintptr_t)syscon_get_first_range(ROCKCHIP_SYSCON_SGRF);
const uintptr_t SGRF_BUSDMAC_OFFSET = 0x100;
const uintptr_t SGRF_BUSDMAC_BASE = SGRF_BASE + SGRF_BUSDMAC_OFFSET;
return SGRF_BUSDMAC_BASE + sizeof(u32) * no;
}
static void sgrf_init(void)
{
struct rk3368_cru * const cru =
(struct rk3368_cru * const)rockchip_get_cru();
const u16 SGRF_SOC_CON_SEC = GENMASK(15, 0);
const u16 SGRF_BUSDMAC_CON0_SEC = BIT(2);
const u16 SGRF_BUSDMAC_CON1_SEC = GENMASK(15, 12);
/* Set all configurable IP to 'non secure'-mode */
rk_setreg(sgrf_soc_con_addr(5), SGRF_SOC_CON_SEC);
rk_setreg(sgrf_soc_con_addr(6), SGRF_SOC_CON_SEC);
rk_setreg(sgrf_soc_con_addr(7), SGRF_SOC_CON_SEC);
/*
* From rockchip-uboot/arch/arm/cpu/armv8/rk33xx/cpu.c
* Original comment: "ddr space set no secure mode"
*/
rk_clrreg(sgrf_soc_con_addr(8), SGRF_SOC_CON_SEC);
rk_clrreg(sgrf_soc_con_addr(9), SGRF_SOC_CON_SEC);
rk_clrreg(sgrf_soc_con_addr(10), SGRF_SOC_CON_SEC);
/* Set 'secure dma' to 'non secure'-mode */
rk_setreg(sgrf_busdmac_addr(0), SGRF_BUSDMAC_CON0_SEC);
rk_setreg(sgrf_busdmac_addr(1), SGRF_BUSDMAC_CON1_SEC);
dsb(); /* barrier */
rk_setreg(&cru->softrst_con[1], DMA1_SRST_REQ);
rk_setreg(&cru->softrst_con[4], DMA2_SRST_REQ);
dsb(); /* barrier */
udelay(10);
rk_clrreg(&cru->softrst_con[1], DMA1_SRST_REQ);
rk_clrreg(&cru->softrst_con[4], DMA2_SRST_REQ);
}
int arch_cpu_init(void)
{
/* Reset security, so we can use DMA in the MMC drivers */
sgrf_init();
return 0;
}
#endif
#ifdef CONFIG_DEBUG_UART_BOARD_INIT
void board_debug_uart_init(void)
{
/*
* N.B.: This is called before the device-model has been
* initialised. For this reason, we can not access
* the GRF address range using the syscon API.
*/
#if defined(CONFIG_DEBUG_UART_BASE) && (CONFIG_DEBUG_UART_BASE == 0xff180000)
struct rk3368_grf * const grf =
(struct rk3368_grf * const)0xff770000;
enum {
GPIO2D1_MASK = GENMASK(3, 2),
GPIO2D1_GPIO = 0,
GPIO2D1_UART0_SOUT = (1 << 2),
GPIO2D0_MASK = GENMASK(1, 0),
GPIO2D0_GPIO = 0,
GPIO2D0_UART0_SIN = (1 << 0),
};
/* Enable early UART0 on the RK3368 */
rk_clrsetreg(&grf->gpio2d_iomux,
GPIO2D0_MASK, GPIO2D0_UART0_SIN);
rk_clrsetreg(&grf->gpio2d_iomux,
GPIO2D1_MASK, GPIO2D1_UART0_SOUT);
#elif defined(CONFIG_DEBUG_UART_BASE) && (CONFIG_DEBUG_UART_BASE == 0xff1c0000)
struct rk3368_pmu_grf * const pmugrf __maybe_unused =
(struct rk3368_pmu_grf * const)0xff738000;
enum {
/* UART4 */
GPIO0D2_MASK = GENMASK(5, 4),
GPIO0D2_GPIO = 0,
GPIO0D2_UART4_SOUT = (3 << 4),
GPIO0D3_MASK = GENMASK(7, 6),
GPIO0D3_GPIO = 0,
GPIO0D3_UART4_SIN = (3 << 6),
};
/* Enable early UART4 on the PX5 */
rk_clrsetreg(&pmugrf->gpio0d_iomux,
GPIO0D2_MASK | GPIO0D3_MASK,
GPIO0D2_UART4_SOUT | GPIO0D3_UART4_SIN);
#elif defined(CONFIG_DEBUG_UART_BASE) && (CONFIG_DEBUG_UART_BASE == 0xff690000)
struct rk3368_grf * const grf =
(struct rk3368_grf * const)0xff770000;
enum {
GPIO2A6_SHIFT = 12,
GPIO2A6_MASK = GENMASK(13, 12),
GPIO2A6_GPIO = 0,
GPIO2A6_UART2_SIN = (2 << GPIO2A6_SHIFT),
GPIO2A5_SHIFT = 10,
GPIO2A5_MASK = GENMASK(11, 10),
GPIO2A5_GPIO = 0,
GPIO2A5_UART2_SOUT = (2 << GPIO2A5_SHIFT),
};
/* Enable early UART2 on the RK3368 */
rk_clrsetreg(&grf->gpio2a_iomux,
GPIO2A6_MASK, GPIO2A6_UART2_SIN);
rk_clrsetreg(&grf->gpio2a_iomux,
GPIO2A5_MASK, GPIO2A5_UART2_SOUT);
#endif
}
#endif
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