rockchip: rk3188: Add main, spl and tpl boards

The rk3188 needs 3 U-Boot stages: a tpl living in 1KB of sram, a spl
the resides in the rest of the sram and loads the regular U-Boot living
in regular ram.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Kever Yang <kever.yang@rock-chips.com>

1 files changed, 218 insertions, 0 deletions

diff --git a/arch/arm/mach-rockchip/rk3188-board-spl.c b/arch/arm/mach-rockchip/rk3188-board-spl.c
new file mode 100644
index 0000000000..f93feae0c9
--- /dev/null
+++ b/arch/arm/mach-rockchip/rk3188-board-spl.c
@@ -0,0 +1,218 @@
+/*
+ * (C) Copyright 2015 Google, Inc
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#include <common.h>
+#include <debug_uart.h>
+#include <dm.h>
+#include <fdtdec.h>
+#include <led.h>
+#include <malloc.h>
+#include <ram.h>
+#include <spl.h>
+#include <asm/gpio.h>
+#include <asm/io.h>
+#include <asm/arch/bootrom.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/periph.h>
+#include <asm/arch/pmu_rk3188.h>
+#include <asm/arch/sdram.h>
+#include <asm/arch/timer.h>
+#include <dm/pinctrl.h>
+#include <dm/root.h>
+#include <dm/test.h>
+#include <dm/util.h>
+#include <power/regulator.h>
+#include <syscon.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+u32 spl_boot_device(void)
+{
+#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+	const void *blob = gd->fdt_blob;
+	struct udevice *dev;
+	const char *bootdev;
+	int node;
+	int ret;
+
+	bootdev = fdtdec_get_config_string(blob, "u-boot,boot0");
+	debug("Boot device %s\n", bootdev);
+	if (!bootdev)
+		goto fallback;
+
+	node = fdt_path_offset(blob, bootdev);
+	if (node < 0) {
+		debug("node=%d\n", node);
+		goto fallback;
+	}
+	ret = device_get_global_by_of_offset(node, &dev);
+	if (ret) {
+		debug("device at node %s/%d not found: %d\n", bootdev, node,
+		      ret);
+		goto fallback;
+	}
+	debug("Found device %s\n", dev->name);
+	switch (device_get_uclass_id(dev)) {
+	case UCLASS_SPI_FLASH:
+		return BOOT_DEVICE_SPI;
+	case UCLASS_MMC:
+		return BOOT_DEVICE_MMC1;
+	default:
+		debug("Booting from device uclass '%s' not supported\n",
+		      dev_get_uclass_name(dev));
+	}
+
+fallback:
+#endif
+	return BOOT_DEVICE_MMC1;
+}
+
+u32 spl_boot_mode(const u32 boot_device)
+{
+	return MMCSD_MODE_RAW;
+}
+
+void board_init_f(ulong dummy)
+{
+	struct udevice *pinctrl, *dev;
+	struct rk3188_pmu *pmu;
+	int ret;
+
+	/* Example code showing how to enable the debug UART on RK3188 */
+#ifdef EARLY_UART
+#include <asm/arch/grf_rk3188.h>
+	/* Enable early UART on the RK3188 */
+#define GRF_BASE	0x20008000
+	struct rk3188_grf * const grf = (void *)GRF_BASE;
+
+	rk_clrsetreg(&grf->gpio1b_iomux,
+		     GPIO1B1_MASK << GPIO1B1_SHIFT |
+		     GPIO1B0_MASK << GPIO1B0_SHIFT,
+		     GPIO1B1_UART2_SOUT << GPIO1B1_SHIFT |
+		     GPIO1B0_UART2_SIN << GPIO1B0_SHIFT);
+	/*
+	 * Debug UART can be used from here if required:
+	 *
+	 * debug_uart_init();
+	 * printch('a');
+	 * printhex8(0x1234);
+	 * printascii("string");
+	 */
+	debug_uart_init();
+	printch('s');
+	printch('p');
+	printch('l');
+	printch('\n');
+#endif
+
+	ret = spl_init();
+	if (ret) {
+		debug("spl_init() failed: %d\n", ret);
+		hang();
+	}
+
+	rockchip_timer_init();
+
+	ret = rockchip_get_clk(&dev);
+	if (ret) {
+		debug("CLK init failed: %d\n", ret);
+		return;
+	}
+
+	/*
+	 * Recover the bootrom's stackpointer.
+	 * For whatever reason needs to run after rockchip_get_clk.
+	 */
+	pmu = syscon_get_first_range(ROCKCHIP_SYSCON_PMU);
+	if (IS_ERR(pmu))
+		error("pmu syscon returned %ld\n", PTR_ERR(pmu));
+	SAVE_SP_ADDR = readl(&pmu->sys_reg[2]);
+
+	ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
+	if (ret) {
+		debug("Pinctrl init failed: %d\n", ret);
+		return;
+	}
+
+	ret = uclass_get_device(UCLASS_RAM, 0, &dev);
+	if (ret) {
+		debug("DRAM init failed: %d\n", ret);
+		return;
+	}
+
+#if defined(CONFIG_ROCKCHIP_SPL_BACK_TO_BROM) && !defined(CONFIG_SPL_BOARD_INIT)
+	back_to_bootrom();
+#endif
+}
+
+static int setup_led(void)
+{
+#ifdef CONFIG_SPL_LED
+	struct udevice *dev;
+	char *led_name;
+	int ret;
+
+	led_name = fdtdec_get_config_string(gd->fdt_blob, "u-boot,boot-led");
+	if (!led_name)
+		return 0;
+	ret = led_get_by_label(led_name, &dev);
+	if (ret) {
+		debug("%s: get=%d\n", __func__, ret);
+		return ret;
+	}
+	ret = led_set_on(dev, 1);
+	if (ret)
+		return ret;
+#endif
+
+	return 0;
+}
+
+void spl_board_init(void)
+{
+	struct udevice *pinctrl;
+	int ret;
+
+	ret = setup_led();
+	if (ret) {
+		debug("LED ret=%d\n", ret);
+		hang();
+	}
+
+	ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
+	if (ret) {
+		debug("%s: Cannot find pinctrl device\n", __func__);
+		goto err;
+	}
+
+#ifdef CONFIG_SPL_MMC_SUPPORT
+	ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_SDCARD);
+	if (ret) {
+		debug("%s: Failed to set up SD card\n", __func__);
+		goto err;
+	}
+#endif
+
+	/* 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;
+	}
+
+	preloader_console_init();
+#ifdef CONFIG_ROCKCHIP_SPL_BACK_TO_BROM
+	back_to_bootrom();
+#endif
+	return;
+
+err:
+	printf("spl_board_init: Error %d\n", ret);
+
+	/* No way to report error here */
+	hang();
+}