--- /dev/null
+/*
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Aneesh V <aneesh@ti.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#include <common.h>
+#include <spl.h>
+#include <asm/u-boot.h>
+#include <nand.h>
+#include <fat.h>
+#include <version.h>
+#include <i2c.h>
+#include <image.h>
+#include <malloc.h>
+#include <linux/compiler.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifndef CONFIG_SYS_UBOOT_START
+#define CONFIG_SYS_UBOOT_START CONFIG_SYS_TEXT_BASE
+#endif
+#ifndef CONFIG_SYS_MONITOR_LEN
+#define CONFIG_SYS_MONITOR_LEN (200 * 1024)
+#endif
+
+u32 *boot_params_ptr = NULL;
+struct spl_image_info spl_image;
+
+/* Define board data structure */
+static bd_t bdata __attribute__ ((section(".data")));
+
+/*
+ * Default function to determine if u-boot or the OS should
+ * be started. This implementation always returns 1.
+ *
+ * Please implement your own board specific funcion to do this.
+ *
+ * RETURN
+ * 0 to not start u-boot
+ * positive if u-boot should start
+ */
+#ifdef CONFIG_SPL_OS_BOOT
+__weak int spl_start_uboot(void)
+{
+ puts("SPL: Please implement spl_start_uboot() for your board\n");
+ puts("SPL: Direct Linux boot not active!\n");
+ return 1;
+}
+#endif
+
+/*
+ * Weak default function for board specific cleanup/preparation before
+ * Linux boot. Some boards/platforms might not need it, so just provide
+ * an empty stub here.
+ */
+__weak void spl_board_prepare_for_linux(void)
+{
+ /* Nothing to do! */
+}
+
+void spl_parse_image_header(const struct image_header *header)
+{
+ u32 header_size = sizeof(struct image_header);
+
+ if (image_get_magic(header) == IH_MAGIC) {
+ if (spl_image.flags & SPL_COPY_PAYLOAD_ONLY) {
+ /*
+ * On some system (e.g. powerpc), the load-address and
+ * entry-point is located at address 0. We can't load
+ * to 0-0x40. So skip header in this case.
+ */
+ spl_image.load_addr = image_get_load(header);
+ spl_image.entry_point = image_get_ep(header);
+ spl_image.size = image_get_data_size(header);
+ } else {
+ spl_image.entry_point = image_get_load(header);
+ /* Load including the header */
+ spl_image.load_addr = spl_image.entry_point -
+ header_size;
+ spl_image.size = image_get_data_size(header) +
+ header_size;
+ }
+ spl_image.os = image_get_os(header);
+ spl_image.name = image_get_name(header);
+ debug("spl: payload image: %.*s load addr: 0x%x size: %d\n",
+ sizeof(spl_image.name), spl_image.name,
+ spl_image.load_addr, spl_image.size);
+ } else {
+ /* Signature not found - assume u-boot.bin */
+ debug("mkimage signature not found - ih_magic = %x\n",
+ header->ih_magic);
+ /* Let's assume U-Boot will not be more than 200 KB */
+ spl_image.size = CONFIG_SYS_MONITOR_LEN;
+ spl_image.entry_point = CONFIG_SYS_UBOOT_START;
+ spl_image.load_addr = CONFIG_SYS_TEXT_BASE;
+ spl_image.os = IH_OS_U_BOOT;
+ spl_image.name = "U-Boot";
+ }
+}
+
+__weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
+{
+ typedef void __noreturn (*image_entry_noargs_t)(void);
+
+ image_entry_noargs_t image_entry =
+ (image_entry_noargs_t) spl_image->entry_point;
+
+ debug("image entry point: 0x%X\n", spl_image->entry_point);
+ image_entry();
+}
+
+#ifdef CONFIG_SPL_RAM_DEVICE
+static void spl_ram_load_image(void)
+{
+ const struct image_header *header;
+
+ /*
+ * Get the header. It will point to an address defined by handoff
+ * which will tell where the image located inside the flash. For
+ * now, it will temporary fixed to address pointed by U-Boot.
+ */
+ header = (struct image_header *)
+ (CONFIG_SYS_TEXT_BASE - sizeof(struct image_header));
+
+ spl_parse_image_header(header);
+}
+#endif
+
+void board_init_r(gd_t *dummy1, ulong dummy2)
+{
+ u32 boot_device;
+ debug(">>spl:board_init_r()\n");
+
+#ifdef CONFIG_SYS_SPL_MALLOC_START
+ mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
+ CONFIG_SYS_SPL_MALLOC_SIZE);
+#endif
+
+#ifndef CONFIG_PPC
+ /*
+ * timer_init() does not exist on PPC systems. The timer is initialized
+ * and enabled (decrementer) in interrupt_init() here.
+ */
+ timer_init();
+#endif
+
+#ifdef CONFIG_SPL_BOARD_INIT
+ spl_board_init();
+#endif
+
+ boot_device = spl_boot_device();
+ debug("boot device - %d\n", boot_device);
+ switch (boot_device) {
+#ifdef CONFIG_SPL_RAM_DEVICE
+ case BOOT_DEVICE_RAM:
+ spl_ram_load_image();
+ break;
+#endif
+#ifdef CONFIG_SPL_MMC_SUPPORT
+ case BOOT_DEVICE_MMC1:
+ case BOOT_DEVICE_MMC2:
+ case BOOT_DEVICE_MMC2_2:
+ spl_mmc_load_image();
+ break;
+#endif
+#ifdef CONFIG_SPL_NAND_SUPPORT
+ case BOOT_DEVICE_NAND:
+ spl_nand_load_image();
+ break;
+#endif
+#ifdef CONFIG_SPL_ONENAND_SUPPORT
+ case BOOT_DEVICE_ONENAND:
+ spl_onenand_load_image();
+ break;
+#endif
+#ifdef CONFIG_SPL_NOR_SUPPORT
+ case BOOT_DEVICE_NOR:
+ spl_nor_load_image();
+ break;
+#endif
+#ifdef CONFIG_SPL_YMODEM_SUPPORT
+ case BOOT_DEVICE_UART:
+ spl_ymodem_load_image();
+ break;
+#endif
+#ifdef CONFIG_SPL_SPI_SUPPORT
+ case BOOT_DEVICE_SPI:
+ spl_spi_load_image();
+ break;
+#endif
+#ifdef CONFIG_SPL_ETH_SUPPORT
+ case BOOT_DEVICE_CPGMAC:
+#ifdef CONFIG_SPL_ETH_DEVICE
+ spl_net_load_image(CONFIG_SPL_ETH_DEVICE);
+#else
+ spl_net_load_image(NULL);
+#endif
+ break;
+#endif
+#ifdef CONFIG_SPL_USBETH_SUPPORT
+ case BOOT_DEVICE_USBETH:
+ spl_net_load_image("usb_ether");
+ break;
+#endif
+#ifdef CONFIG_SPL_USB_SUPPORT
+ case BOOT_DEVICE_USB:
+ spl_usb_load_image();
+ break;
+#endif
+#ifdef CONFIG_SPL_SATA_SUPPORT
+ case BOOT_DEVICE_SATA:
+ spl_sata_load_image();
+ break;
+#endif
+ default:
+ debug("SPL: Un-supported Boot Device\n");
+ hang();
+ }
+
+ switch (spl_image.os) {
+ case IH_OS_U_BOOT:
+ debug("Jumping to U-Boot\n");
+ break;
+#ifdef CONFIG_SPL_OS_BOOT
+ case IH_OS_LINUX:
+ debug("Jumping to Linux\n");
+ spl_board_prepare_for_linux();
+ jump_to_image_linux((void *)CONFIG_SYS_SPL_ARGS_ADDR);
+#endif
+ default:
+ debug("Unsupported OS image.. Jumping nevertheless..\n");
+ }
+ jump_to_image_no_args(&spl_image);
+}
+
+/*
+ * This requires UART clocks to be enabled. In order for this to work the
+ * caller must ensure that the gd pointer is valid.
+ */
+void preloader_console_init(void)
+{
+ gd->bd = &bdata;
+ gd->baudrate = CONFIG_BAUDRATE;
+
+ serial_init(); /* serial communications setup */
+
+ gd->have_console = 1;
+
+ puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
+ U_BOOT_TIME ")\n");
+#ifdef CONFIG_SPL_DISPLAY_PRINT
+ spl_display_print();
+#endif
+}
Code Review / kvmfornfv.git / blobdiff