Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 162 insertions, 0 deletions

diff --git a/roms/u-boot/arch/arm/cpu/arm926ejs/mxs/spl_boot.c b/roms/u-boot/arch/arm/cpu/arm926ejs/mxs/spl_boot.c
new file mode 100644
index 000000000..0a8985b90
--- /dev/null
+++ b/roms/u-boot/arch/arm/cpu/arm926ejs/mxs/spl_boot.c
@@ -0,0 +1,162 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Freescale i.MX28 Boot setup
+ *
+ * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
+ * on behalf of DENX Software Engineering GmbH
+ */
+
+#include <common.h>
+#include <config.h>
+#include <init.h>
+#include <log.h>
+#include <serial.h>
+#include <asm/global_data.h>
+#include <asm/io.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/gpio.h>
+#include <asm/sections.h>
+#include <linux/compiler.h>
+
+#include "mxs_init.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+static gd_t gdata __section(".data");
+#ifdef CONFIG_SPL_SERIAL_SUPPORT
+static struct bd_info bdata __section(".data");
+#endif
+
+/*
+ * This delay function is intended to be used only in early stage of boot, where
+ * clock are not set up yet.
+ */
+void early_delay(int delay)
+{
+	struct mxs_digctl_regs *digctl_regs =
+		(struct mxs_digctl_regs *)MXS_DIGCTL_BASE;
+
+	uint32_t st = readl(&digctl_regs->hw_digctl_microseconds);
+	while (readl(&digctl_regs->hw_digctl_microseconds) - st <= delay)
+		;
+}
+
+#if defined(CONFIG_MX23)
+#define	MUX_CONFIG_BOOTMODE_PAD	(MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_NOPULL)
+static const iomux_cfg_t iomux_boot[] = {
+	MX23_PAD_LCD_D00__GPIO_1_0 | MUX_CONFIG_BOOTMODE_PAD,
+	MX23_PAD_LCD_D01__GPIO_1_1 | MUX_CONFIG_BOOTMODE_PAD,
+	MX23_PAD_LCD_D02__GPIO_1_2 | MUX_CONFIG_BOOTMODE_PAD,
+	MX23_PAD_LCD_D03__GPIO_1_3 | MUX_CONFIG_BOOTMODE_PAD,
+	MX23_PAD_LCD_D04__GPIO_1_4 | MUX_CONFIG_BOOTMODE_PAD,
+	MX23_PAD_LCD_D05__GPIO_1_5 | MUX_CONFIG_BOOTMODE_PAD,
+};
+#endif
+
+static uint8_t mxs_get_bootmode_index(void)
+{
+	uint8_t bootmode = 0;
+	int i;
+	uint8_t masked;
+
+#if defined(CONFIG_MX23)
+	/* Setup IOMUX of bootmode pads to GPIO */
+	mxs_iomux_setup_multiple_pads(iomux_boot, ARRAY_SIZE(iomux_boot));
+
+	/* Setup bootmode pins as GPIO input */
+	gpio_direction_input(MX23_PAD_LCD_D00__GPIO_1_0);
+	gpio_direction_input(MX23_PAD_LCD_D01__GPIO_1_1);
+	gpio_direction_input(MX23_PAD_LCD_D02__GPIO_1_2);
+	gpio_direction_input(MX23_PAD_LCD_D03__GPIO_1_3);
+	gpio_direction_input(MX23_PAD_LCD_D05__GPIO_1_5);
+
+	/* Read bootmode pads */
+	bootmode |= (gpio_get_value(MX23_PAD_LCD_D00__GPIO_1_0) ? 1 : 0) << 0;
+	bootmode |= (gpio_get_value(MX23_PAD_LCD_D01__GPIO_1_1) ? 1 : 0) << 1;
+	bootmode |= (gpio_get_value(MX23_PAD_LCD_D02__GPIO_1_2) ? 1 : 0) << 2;
+	bootmode |= (gpio_get_value(MX23_PAD_LCD_D03__GPIO_1_3) ? 1 : 0) << 3;
+	bootmode |= (gpio_get_value(MX23_PAD_LCD_D05__GPIO_1_5) ? 1 : 0) << 5;
+#elif defined(CONFIG_MX28)
+	/* The global boot mode will be detected by ROM code and its value
+	 * is stored at the fixed address 0x00019BF0 in OCRAM.
+	 */
+#define GLOBAL_BOOT_MODE_ADDR 0x00019BF0
+	bootmode = __raw_readl(GLOBAL_BOOT_MODE_ADDR);
+#endif
+
+	for (i = 0; i < ARRAY_SIZE(mxs_boot_modes); i++) {
+		masked = bootmode & mxs_boot_modes[i].boot_mask;
+		if (masked == mxs_boot_modes[i].boot_pads)
+			break;
+	}
+
+	return i;
+}
+
+static void mxs_spl_fixup_vectors(void)
+{
+	/*
+	 * Copy our vector table to 0x0, since due to HAB, we cannot
+	 * be loaded to 0x0. We want to have working vectoring though,
+	 * thus this fixup. Our vectoring table is PIC, so copying is
+	 * fine.
+	 */
+
+	/* cppcheck-suppress nullPointer */
+	memcpy(0x0, &_start, 0x60);
+}
+
+static void mxs_spl_console_init(void)
+{
+#ifdef CONFIG_SPL_SERIAL_SUPPORT
+	gd->bd = &bdata;
+	gd->baudrate = CONFIG_BAUDRATE;
+	serial_init();
+	gd->have_console = 1;
+#endif
+}
+
+void mxs_common_spl_init(const uint32_t arg, const uint32_t *resptr,
+			 const iomux_cfg_t *iomux_setup,
+			 const unsigned int iomux_size)
+{
+	struct mxs_spl_data *data = MXS_SPL_DATA;
+	uint8_t bootmode = mxs_get_bootmode_index();
+	set_gd(&gdata);
+
+	mxs_spl_fixup_vectors();
+
+	mxs_iomux_setup_multiple_pads(iomux_setup, iomux_size);
+
+	mxs_spl_console_init();
+	debug("SPL: Serial Console Initialised\n");
+
+	mxs_power_init();
+
+	mxs_mem_init();
+	data->mem_dram_size = mxs_mem_get_size();
+
+	data->boot_mode_idx = bootmode;
+
+	mxs_power_wait_pswitch();
+
+	if (mxs_boot_modes[data->boot_mode_idx].boot_pads == MXS_BM_JTAG) {
+		debug("SPL: Waiting for JTAG user\n");
+		asm volatile ("x: b x");
+	}
+}
+
+#ifndef CONFIG_SPL_FRAMEWORK
+/* Support aparatus */
+inline void board_init_f(unsigned long bootflag)
+{
+	for (;;)
+		;
+}
+
+inline void board_init_r(gd_t *id, ulong dest_addr)
+{
+	for (;;)
+		;
+}
+#endif