diff options
Diffstat (limited to 'arch/arm/mach-rockchip/rk3399/rk3399.c')
| -rw-r--r-- | arch/arm/mach-rockchip/rk3399/rk3399.c | 151 |
1 files changed, 138 insertions, 13 deletions
diff --git a/arch/arm/mach-rockchip/rk3399/rk3399.c b/arch/arm/mach-rockchip/rk3399/rk3399.c index 0f09ea5c49..863024d071 100644 --- a/arch/arm/mach-rockchip/rk3399/rk3399.c +++ b/arch/arm/mach-rockchip/rk3399/rk3399.c @@ -4,18 +4,29 @@ */ #include <common.h> +#include <spl.h> #include <spl_gpio.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/gpio.h> #include <asm/arch-rockchip/grf_rk3399.h> #include <asm/arch-rockchip/hardware.h> +#include <power/regulator.h> DECLARE_GLOBAL_DATA_PTR; #define GRF_EMMCCORE_CON11 0xff77f02c #define GRF_BASE 0xff770000 +const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = { + [BROM_BOOTSOURCE_EMMC] = "/sdhci@fe330000", + [BROM_BOOTSOURCE_SPINOR] = "/spi@ff1d0000", + [BROM_BOOTSOURCE_SD] = "/dwmmc@fe320000", +}; + static struct mm_region rk3399_mem_map[] = { { .virt = 0x0UL, @@ -67,24 +78,30 @@ void rockchip_stimer_init(void) } #endif -int dram_init_banksize(void) +int arch_cpu_init(void) { - size_t max_size = min((unsigned long)gd->ram_size, gd->ram_top); - - /* Reserve 0x200000 for ATF bl31 */ - gd->bd->bi_dram[0].start = 0x200000; - gd->bd->bi_dram[0].size = max_size - gd->bd->bi_dram[0].start; - return 0; -} +#ifdef CONFIG_SPL_BUILD + struct rk3399_pmusgrf_regs *sgrf; + struct rk3399_grf_regs *grf; -int arch_cpu_init(void) -{ - /* We do some SoC one time setting here. */ - struct rk3399_grf_regs * const grf = (void *)GRF_BASE; + /* + * Disable DDR and SRAM security regions. + * + * As we are entered from the BootROM, the region from + * 0x0 through 0xfffff (i.e. the first MB of memory) will + * be protected. This will cause issues with the DW_MMC + * driver, which tries to DMA from/to the stack (likely) + * located in this range. + */ + sgrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUSGRF); + rk_clrsetreg(&sgrf->ddr_rgn_con[16], 0x1ff, 0); + rk_clrreg(&sgrf->slv_secure_con4, 0x2000); - /* Emmc clock generator: disable the clock multipilier */ + /* eMMC clock generator: disable the clock multipilier */ + grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); rk_clrreg(&grf->emmccore_con[11], 0x0ff); +#endif return 0; } @@ -146,3 +163,111 @@ void board_debug_uart_init(void) #endif } #endif + +#if defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD) +const char *spl_decode_boot_device(u32 boot_device) +{ + int i; + static const struct { + u32 boot_device; + const char *ofpath; + } spl_boot_devices_tbl[] = { + { BOOT_DEVICE_MMC1, "/dwmmc@fe320000" }, + { BOOT_DEVICE_MMC2, "/sdhci@fe330000" }, + { BOOT_DEVICE_SPI, "/spi@ff1d0000" }, + }; + + for (i = 0; i < ARRAY_SIZE(spl_boot_devices_tbl); ++i) + if (spl_boot_devices_tbl[i].boot_device == boot_device) + return spl_boot_devices_tbl[i].ofpath; + + return NULL; +} + +void spl_perform_fixups(struct spl_image_info *spl_image) +{ + void *blob = spl_image->fdt_addr; + const char *boot_ofpath; + int chosen; + + /* + * Inject the ofpath of the device the full U-Boot (or Linux in + * Falcon-mode) was booted from into the FDT, if a FDT has been + * loaded at the same time. + */ + if (!blob) + return; + + boot_ofpath = spl_decode_boot_device(spl_image->boot_device); + if (!boot_ofpath) { + pr_err("%s: could not map boot_device to ofpath\n", __func__); + return; + } + + chosen = fdt_find_or_add_subnode(blob, 0, "chosen"); + if (chosen < 0) { + pr_err("%s: could not find/create '/chosen'\n", __func__); + return; + } + fdt_setprop_string(blob, chosen, + "u-boot,spl-boot-device", boot_ofpath); +} + +#if defined(SPL_GPIO_SUPPORT) +static void rk3399_force_power_on_reset(void) +{ + ofnode node; + struct gpio_desc sysreset_gpio; + + debug("%s: trying to force a power-on reset\n", __func__); + + node = ofnode_path("/config"); + if (!ofnode_valid(node)) { + debug("%s: no /config node?\n", __func__); + return; + } + + if (gpio_request_by_name_nodev(node, "sysreset-gpio", 0, + &sysreset_gpio, GPIOD_IS_OUT)) { + debug("%s: could not find a /config/sysreset-gpio\n", __func__); + return; + } + + dm_gpio_set_value(&sysreset_gpio, 1); +} +#endif + +void spl_board_init(void) +{ +#if defined(SPL_GPIO_SUPPORT) + struct rk3399_cru *cru = rockchip_get_cru(); + + /* + * The RK3399 resets only 'almost all logic' (see also in the TRM + * "3.9.4 Global software reset"), when issuing a software reset. + * This may cause issues during boot-up for some configurations of + * the application software stack. + * + * To work around this, we test whether the last reset reason was + * a power-on reset and (if not) issue an overtemp-reset to reset + * the entire module. + * + * While this was previously fixed by modifying the various places + * that could generate a software reset (e.g. U-Boot's sysreset + * driver, the ATF or Linux), we now have it here to ensure that + * we no longer have to track this through the various components. + */ + if (cru->glb_rst_st != 0) + rk3399_force_power_on_reset(); +#endif + +#if defined(SPL_DM_REGULATOR) + /* + * Turning the eMMC and SPI back on (if disabled via the Qseven + * BIOS_ENABLE) signal is done through a always-on regulator). + */ + if (regulators_enable_boot_on(false)) + debug("%s: Cannot enable boot on regulator\n", __func__); +#endif +} +#endif |