rockchip: rk3399; move spl_board_init() into soc file

Move spl_board_init() into rk3399.c so that we can re-use the
common SPL board file later.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>

1 files changed, 63 insertions, 1 deletions

diff --git a/arch/arm/mach-rockchip/rk3399/rk3399.c b/arch/arm/mach-rockchip/rk3399/rk3399.c
index ead878b3fd..c4337e6093 100644
--- a/arch/arm/mach-rockchip/rk3399/rk3399.c
+++ b/arch/arm/mach-rockchip/rk3399/rk3399.c
@@ -4,12 +4,16 @@
  */
 
 #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/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;
 
@@ -164,7 +168,7 @@ void board_debug_uart_init(void)
 }
 #endif
 
-#ifdef CONFIG_SPL_BUILD
+#if defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD)
 const char *spl_decode_boot_device(u32 boot_device)
 {
 	int i;
@@ -212,4 +216,62 @@ void spl_perform_fixups(struct spl_image_info *spl_image)
 	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