+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2016 Rockchip Electronics Co., Ltd
- *
- * SPDX-License-Identifier: GPL-2.0+
+ * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH
*/
#include <common.h>
#include <debug_uart.h>
#include <dm.h>
-#include <fdtdec.h>
#include <ram.h>
#include <spl.h>
+#include <spl_gpio.h>
+#include <syscon.h>
#include <asm/gpio.h>
#include <asm/io.h>
-#include <asm/arch/clock.h>
-#include <asm/arch/hardware.h>
-#include <asm/arch/periph.h>
-#include <asm/arch/sdram.h>
-#include <asm/arch/timer.h>
-#include <dm/pinctrl.h>
+#include <asm/arch-rockchip/bootrom.h>
+#include <asm/arch-rockchip/clock.h>
+#include <asm/arch-rockchip/cru_rk3399.h>
+#include <asm/arch-rockchip/grf_rk3399.h>
+#include <asm/arch-rockchip/hardware.h>
+#include <asm/arch-rockchip/periph.h>
+#include <asm/arch-rockchip/sys_proto.h>
#include <power/regulator.h>
-DECLARE_GLOBAL_DATA_PTR;
+void board_return_to_bootrom(void)
+{
+ back_to_bootrom(BROM_BOOT_NEXTSTAGE);
+}
+
+static const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = {
+ [BROM_BOOTSOURCE_EMMC] = "/sdhci@fe330000",
+ [BROM_BOOTSOURCE_SPINOR] = "/spi@ff1d0000",
+ [BROM_BOOTSOURCE_SD] = "/dwmmc@fe320000",
+};
+
+const char *board_spl_was_booted_from(void)
+{
+ u32 bootdevice_brom_id = readl(RK3399_BROM_BOOTSOURCE_ID_ADDR);
+ const char *bootdevice_ofpath = NULL;
+
+ if (bootdevice_brom_id < ARRAY_SIZE(boot_devices))
+ bootdevice_ofpath = boot_devices[bootdevice_brom_id];
+
+ if (bootdevice_ofpath)
+ debug("%s: brom_bootdevice_id %x maps to '%s'\n",
+ __func__, bootdevice_brom_id, bootdevice_ofpath);
+ else
+ debug("%s: failed to resolve brom_bootdevice_id %x\n",
+ __func__, bootdevice_brom_id);
+
+ return bootdevice_ofpath;
+}
u32 spl_boot_device(void)
{
- return BOOT_DEVICE_MMC1;
+ u32 boot_device = BOOT_DEVICE_MMC1;
+
+ if (CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM))
+ return BOOT_DEVICE_BOOTROM;
+
+ return boot_device;
+}
+
+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;
}
-u32 spl_boot_mode(const u32 boot_device)
+void spl_perform_fixups(struct spl_image_info *spl_image)
{
- return MMCSD_MODE_RAW;
+ 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);
}
#define TIMER_CHN10_BASE 0xff8680a0
writel(TIMER_EN | TIMER_FMODE, TIMER_CHN10_BASE + TIMER_CONTROL_REG);
}
-void board_debug_uart_init(void)
-{
-#include <asm/arch/grf_rk3399.h>
-#define GRF_BASE 0xff770000
- struct rk3399_grf_regs * const grf = (void *)GRF_BASE;
-
-#if defined(CONFIG_DEBUG_UART_BASE) && (CONFIG_DEBUG_UART_BASE == 0xff180000)
- /* Enable early UART0 on the RK3399 */
- rk_clrsetreg(&grf->gpio2c_iomux,
- GRF_GPIO2C0_SEL_MASK,
- GRF_UART0BT_SIN << GRF_GPIO2C0_SEL_SHIFT);
- rk_clrsetreg(&grf->gpio2c_iomux,
- GRF_GPIO2C1_SEL_MASK,
- GRF_UART0BT_SOUT << GRF_GPIO2C1_SEL_SHIFT);
-#else
- /* Enable early UART2 channel C on the RK3399 */
- rk_clrsetreg(&grf->gpio4c_iomux,
- GRF_GPIO4C3_SEL_MASK,
- GRF_UART2DGBC_SIN << GRF_GPIO4C3_SEL_SHIFT);
- rk_clrsetreg(&grf->gpio4c_iomux,
- GRF_GPIO4C4_SEL_MASK,
- GRF_UART2DBGC_SOUT << GRF_GPIO4C4_SEL_SHIFT);
- /* Set channel C as UART2 input */
- rk_clrsetreg(&grf->soc_con7,
- GRF_UART_DBG_SEL_MASK,
- GRF_UART_DBG_SEL_C << GRF_UART_DBG_SEL_SHIFT);
-#endif
-}
-#define GRF_EMMCCORE_CON11 0xff77f02c
-#define SGRF_DDR_RGN_CON16 0xff330040
-#define SGRF_SLV_SECURE_CON4 0xff33e3d0
void board_init_f(ulong dummy)
{
- struct udevice *pinctrl;
struct udevice *dev;
+ struct rk3399_pmusgrf_regs *sgrf;
+ struct rk3399_grf_regs *grf;
int ret;
-#define EARLY_UART
-#ifdef EARLY_UART
+#ifdef CONFIG_DEBUG_UART
+ debug_uart_init();
+
+# ifdef CONFIG_TARGET_CHROMEBOOK_BOB
+ int sum, i;
+
+ /*
+ * Add a delay and ensure that the compiler does not optimise this out.
+ * This is needed since the power rails tail a while to turn on, and
+ * we get garbage serial output otherwise.
+ */
+ sum = 0;
+ for (i = 0; i < 150000; i++)
+ sum += i;
+ gru_dummy_function(sum);
+#endif /* CONFIG_TARGET_CHROMEBOOK_BOB */
+
/*
* Debug UART can be used from here if required:
*
* printhex8(0x1234);
* printascii("string");
*/
- debug_uart_init();
- printascii("U-Boot SPL board init");
+ debug("U-Boot SPL board init\n");
#endif
- /* Emmc clock generator: disable the clock multipilier */
- rk_clrreg(GRF_EMMCCORE_CON11, 0x0ff);
-
ret = spl_early_init();
if (ret) {
debug("spl_early_init() failed: %d\n", ret);
* driver, which tries to DMA from/to the stack (likely)
* located in this range.
*/
- rk_clrsetreg(SGRF_DDR_RGN_CON16, 0x1FF, 0);
- rk_clrreg(SGRF_SLV_SECURE_CON4, 0x2000);
+ sgrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUSGRF);
+ rk_clrsetreg(&sgrf->ddr_rgn_con[16], 0x1ff, 0);
+ rk_clrreg(&sgrf->slv_secure_con4, 0x2000);
- secure_timer_init();
+ /* eMMC clock generator: disable the clock multipilier */
+ grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
+ rk_clrreg(&grf->emmccore_con[11], 0x0ff);
- ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
- if (ret) {
- debug("Pinctrl init failed: %d\n", ret);
- return;
- }
+ secure_timer_init();
ret = uclass_get_device(UCLASS_RAM, 0, &dev);
if (ret) {
- debug("DRAM init failed: %d\n", ret);
+ pr_err("DRAM init failed: %d\n", ret);
return;
}
}
-void spl_board_init(void)
+#if defined(SPL_GPIO_SUPPORT)
+static void rk3399_force_power_on_reset(void)
{
- struct udevice *pinctrl;
- int ret;
+ ofnode node;
+ struct gpio_desc sysreset_gpio;
- ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
- if (ret) {
- debug("%s: Cannot find pinctrl device\n", __func__);
- goto err;
+ 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;
}
- /* Enable debug UART */
- ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG);
- if (ret) {
- debug("%s: Failed to set up console UART\n", __func__);
- goto err;
+ 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;
}
- preloader_console_init();
-#if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM)
- back_to_bootrom();
+ 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
- return;
-err:
- printf("spl_board_init: Error %d\n", ret);
+#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
- /* No way to report error here */
- hang();
+ preloader_console_init();
}
#ifdef CONFIG_SPL_LOAD_FIT
projects / oweals / u-boot.git / blobdiff