1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2016 Rockchip Electronics Co., Ltd
7 #include <fdt_support.h>
11 #include <asm/armv8/mmu.h>
13 #include <asm/arch-rockchip/bootrom.h>
14 #include <asm/arch-rockchip/clock.h>
15 #include <asm/arch-rockchip/gpio.h>
16 #include <asm/arch-rockchip/grf_rk3399.h>
17 #include <asm/arch-rockchip/hardware.h>
18 #include <power/regulator.h>
20 DECLARE_GLOBAL_DATA_PTR;
22 #define GRF_EMMCCORE_CON11 0xff77f02c
23 #define GRF_BASE 0xff770000
25 const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = {
26 [BROM_BOOTSOURCE_EMMC] = "/sdhci@fe330000",
27 [BROM_BOOTSOURCE_SPINOR] = "/spi@ff1d0000",
28 [BROM_BOOTSOURCE_SD] = "/dwmmc@fe320000",
31 static struct mm_region rk3399_mem_map[] = {
36 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
42 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
44 PTE_BLOCK_PXN | PTE_BLOCK_UXN
51 struct mm_region *mem_map = rk3399_mem_map;
53 #ifdef CONFIG_SPL_BUILD
55 #define TIMER_END_COUNT_L 0x00
56 #define TIMER_END_COUNT_H 0x04
57 #define TIMER_INIT_COUNT_L 0x10
58 #define TIMER_INIT_COUNT_H 0x14
59 #define TIMER_CONTROL_REG 0x1c
62 #define TIMER_FMODE BIT(0)
63 #define TIMER_RMODE BIT(1)
65 void rockchip_stimer_init(void)
67 /* If Timer already enabled, don't re-init it */
68 u32 reg = readl(CONFIG_ROCKCHIP_STIMER_BASE + TIMER_CONTROL_REG);
73 writel(0xffffffff, CONFIG_ROCKCHIP_STIMER_BASE + TIMER_END_COUNT_L);
74 writel(0xffffffff, CONFIG_ROCKCHIP_STIMER_BASE + TIMER_END_COUNT_H);
75 writel(0, CONFIG_ROCKCHIP_STIMER_BASE + TIMER_INIT_COUNT_L);
76 writel(0, CONFIG_ROCKCHIP_STIMER_BASE + TIMER_INIT_COUNT_H);
77 writel(TIMER_EN | TIMER_FMODE, CONFIG_ROCKCHIP_STIMER_BASE + \
82 int arch_cpu_init(void)
85 #ifdef CONFIG_SPL_BUILD
86 struct rk3399_pmusgrf_regs *sgrf;
87 struct rk3399_grf_regs *grf;
90 * Disable DDR and SRAM security regions.
92 * As we are entered from the BootROM, the region from
93 * 0x0 through 0xfffff (i.e. the first MB of memory) will
94 * be protected. This will cause issues with the DW_MMC
95 * driver, which tries to DMA from/to the stack (likely)
96 * located in this range.
98 sgrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUSGRF);
99 rk_clrsetreg(&sgrf->ddr_rgn_con[16], 0x1ff, 0);
100 rk_clrreg(&sgrf->slv_secure_con4, 0x2000);
102 /* eMMC clock generator: disable the clock multipilier */
103 grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
104 rk_clrreg(&grf->emmccore_con[11], 0x0ff);
110 #ifdef CONFIG_DEBUG_UART_BOARD_INIT
111 void board_debug_uart_init(void)
113 #define GRF_BASE 0xff770000
114 #define GPIO0_BASE 0xff720000
115 #define PMUGRF_BASE 0xff320000
116 struct rk3399_grf_regs * const grf = (void *)GRF_BASE;
117 #ifdef CONFIG_TARGET_CHROMEBOOK_BOB
118 struct rk3399_pmugrf_regs * const pmugrf = (void *)PMUGRF_BASE;
119 struct rockchip_gpio_regs * const gpio = (void *)GPIO0_BASE;
122 #if defined(CONFIG_DEBUG_UART_BASE) && (CONFIG_DEBUG_UART_BASE == 0xff180000)
123 /* Enable early UART0 on the RK3399 */
124 rk_clrsetreg(&grf->gpio2c_iomux,
125 GRF_GPIO2C0_SEL_MASK,
126 GRF_UART0BT_SIN << GRF_GPIO2C0_SEL_SHIFT);
127 rk_clrsetreg(&grf->gpio2c_iomux,
128 GRF_GPIO2C1_SEL_MASK,
129 GRF_UART0BT_SOUT << GRF_GPIO2C1_SEL_SHIFT);
130 #elif defined(CONFIG_DEBUG_UART_BASE) && (CONFIG_DEBUG_UART_BASE == 0xff1B0000)
131 /* Enable early UART3 on the RK3399 */
132 rk_clrsetreg(&grf->gpio3b_iomux,
133 GRF_GPIO3B6_SEL_MASK,
134 GRF_UART3_SIN << GRF_GPIO3B6_SEL_SHIFT);
135 rk_clrsetreg(&grf->gpio3b_iomux,
136 GRF_GPIO3B7_SEL_MASK,
137 GRF_UART3_SOUT << GRF_GPIO3B7_SEL_SHIFT);
139 # ifdef CONFIG_TARGET_CHROMEBOOK_BOB
140 rk_setreg(&grf->io_vsel, 1 << 0);
143 * Let's enable these power rails here, we are already running the SPI
146 spl_gpio_output(gpio, GPIO(BANK_B, 2), 1); /* PP1500_EN */
147 spl_gpio_set_pull(&pmugrf->gpio0_p, GPIO(BANK_B, 2), GPIO_PULL_NORMAL);
149 spl_gpio_output(gpio, GPIO(BANK_B, 4), 1); /* PP3000_EN */
150 spl_gpio_set_pull(&pmugrf->gpio0_p, GPIO(BANK_B, 4), GPIO_PULL_NORMAL);
151 #endif /* CONFIG_TARGET_CHROMEBOOK_BOB */
153 /* Enable early UART2 channel C on the RK3399 */
154 rk_clrsetreg(&grf->gpio4c_iomux,
155 GRF_GPIO4C3_SEL_MASK,
156 GRF_UART2DGBC_SIN << GRF_GPIO4C3_SEL_SHIFT);
157 rk_clrsetreg(&grf->gpio4c_iomux,
158 GRF_GPIO4C4_SEL_MASK,
159 GRF_UART2DBGC_SOUT << GRF_GPIO4C4_SEL_SHIFT);
160 /* Set channel C as UART2 input */
161 rk_clrsetreg(&grf->soc_con7,
162 GRF_UART_DBG_SEL_MASK,
163 GRF_UART_DBG_SEL_C << GRF_UART_DBG_SEL_SHIFT);
168 #if defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD)
169 const char *spl_decode_boot_device(u32 boot_device)
172 static const struct {
175 } spl_boot_devices_tbl[] = {
176 { BOOT_DEVICE_MMC1, "/dwmmc@fe320000" },
177 { BOOT_DEVICE_MMC2, "/sdhci@fe330000" },
178 { BOOT_DEVICE_SPI, "/spi@ff1d0000" },
181 for (i = 0; i < ARRAY_SIZE(spl_boot_devices_tbl); ++i)
182 if (spl_boot_devices_tbl[i].boot_device == boot_device)
183 return spl_boot_devices_tbl[i].ofpath;
188 void spl_perform_fixups(struct spl_image_info *spl_image)
190 void *blob = spl_image->fdt_addr;
191 const char *boot_ofpath;
195 * Inject the ofpath of the device the full U-Boot (or Linux in
196 * Falcon-mode) was booted from into the FDT, if a FDT has been
197 * loaded at the same time.
202 boot_ofpath = spl_decode_boot_device(spl_image->boot_device);
204 pr_err("%s: could not map boot_device to ofpath\n", __func__);
208 chosen = fdt_find_or_add_subnode(blob, 0, "chosen");
210 pr_err("%s: could not find/create '/chosen'\n", __func__);
213 fdt_setprop_string(blob, chosen,
214 "u-boot,spl-boot-device", boot_ofpath);
217 #if defined(SPL_GPIO_SUPPORT)
218 static void rk3399_force_power_on_reset(void)
221 struct gpio_desc sysreset_gpio;
223 debug("%s: trying to force a power-on reset\n", __func__);
225 node = ofnode_path("/config");
226 if (!ofnode_valid(node)) {
227 debug("%s: no /config node?\n", __func__);
231 if (gpio_request_by_name_nodev(node, "sysreset-gpio", 0,
232 &sysreset_gpio, GPIOD_IS_OUT)) {
233 debug("%s: could not find a /config/sysreset-gpio\n", __func__);
237 dm_gpio_set_value(&sysreset_gpio, 1);
241 void spl_board_init(void)
243 #if defined(SPL_GPIO_SUPPORT)
244 struct rockchip_cru *cru = rockchip_get_cru();
247 * The RK3399 resets only 'almost all logic' (see also in the TRM
248 * "3.9.4 Global software reset"), when issuing a software reset.
249 * This may cause issues during boot-up for some configurations of
250 * the application software stack.
252 * To work around this, we test whether the last reset reason was
253 * a power-on reset and (if not) issue an overtemp-reset to reset
256 * While this was previously fixed by modifying the various places
257 * that could generate a software reset (e.g. U-Boot's sysreset
258 * driver, the ATF or Linux), we now have it here to ensure that
259 * we no longer have to track this through the various components.
261 if (cru->glb_rst_st != 0)
262 rk3399_force_power_on_reset();
265 #if defined(SPL_DM_REGULATOR)
267 * Turning the eMMC and SPI back on (if disabled via the Qseven
268 * BIOS_ENABLE) signal is done through a always-on regulator).
270 if (regulators_enable_boot_on(false))
271 debug("%s: Cannot enable boot on regulator\n", __func__);