mirror of
https://github.com/AsahiLinux/u-boot
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f75231b79a
In OMAP5 Boot device mode of 6 and 7 should be mapped to mmc2/eMMC Signed-off-by: Balaji T K <balajitk@ti.com> Signed-off-by: Tom Rini <trini@ti.com>
228 lines
6 KiB
C
228 lines
6 KiB
C
/*
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* (C) Copyright 2010
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* Texas Instruments, <www.ti.com>
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*
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* Aneesh V <aneesh@ti.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/u-boot.h>
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#include <asm/utils.h>
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#include <asm/arch/sys_proto.h>
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#include <nand.h>
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#include <mmc.h>
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#include <fat.h>
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#include <version.h>
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#include <asm/omap_common.h>
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#include <asm/arch/mmc_host_def.h>
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#include <i2c.h>
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#include <image.h>
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#include <malloc.h>
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#include <linux/compiler.h>
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DECLARE_GLOBAL_DATA_PTR;
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u32* boot_params_ptr = NULL;
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struct spl_image_info spl_image;
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/* Define global data structure pointer to it*/
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static gd_t gdata __attribute__ ((section(".data")));
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static bd_t bdata __attribute__ ((section(".data")));
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inline void hang(void)
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{
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puts("### ERROR ### Please RESET the board ###\n");
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for (;;)
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;
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}
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void board_init_f(ulong dummy)
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{
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/*
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* We call relocate_code() with relocation target same as the
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* CONFIG_SYS_SPL_TEXT_BASE. This will result in relocation getting
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* skipped. Instead, only .bss initialization will happen. That's
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* all we need
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*/
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debug(">>board_init_f()\n");
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relocate_code(CONFIG_SPL_STACK, &gdata, CONFIG_SPL_TEXT_BASE);
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}
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/*
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* Default function to determine if u-boot or the OS should
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* be started. This implementation always returns 1.
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*
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* Please implement your own board specific funcion to do this.
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*
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* RETURN
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* 0 to not start u-boot
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* positive if u-boot should start
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*/
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#ifdef CONFIG_SPL_OS_BOOT
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__weak int spl_start_uboot(void)
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{
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printf("SPL: Please implement spl_start_uboot() for your board\n");
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printf("SPL: Direct Linux boot not active!\n");
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return 1;
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}
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#endif
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void spl_parse_image_header(const struct image_header *header)
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{
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u32 header_size = sizeof(struct image_header);
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if (__be32_to_cpu(header->ih_magic) == IH_MAGIC) {
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spl_image.size = __be32_to_cpu(header->ih_size) + header_size;
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spl_image.entry_point = __be32_to_cpu(header->ih_load);
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/* Load including the header */
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spl_image.load_addr = spl_image.entry_point - header_size;
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spl_image.os = header->ih_os;
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spl_image.name = (const char *)&header->ih_name;
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debug("spl: payload image: %s load addr: 0x%x size: %d\n",
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spl_image.name, spl_image.load_addr, spl_image.size);
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} else {
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/* Signature not found - assume u-boot.bin */
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printf("mkimage signature not found - ih_magic = %x\n",
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header->ih_magic);
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debug("Assuming u-boot.bin ..\n");
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/* Let's assume U-Boot will not be more than 200 KB */
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spl_image.size = 200 * 1024;
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spl_image.entry_point = CONFIG_SYS_TEXT_BASE;
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spl_image.load_addr = CONFIG_SYS_TEXT_BASE;
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spl_image.os = IH_OS_U_BOOT;
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spl_image.name = "U-Boot";
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}
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}
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/*
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* This function jumps to an image with argument. Normally an FDT or ATAGS
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* image.
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* arg: Pointer to paramter image in RAM
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*/
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#ifdef CONFIG_SPL_OS_BOOT
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static void __noreturn jump_to_image_linux(void *arg)
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{
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debug("Entering kernel arg pointer: 0x%p\n", arg);
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typedef void (*image_entry_arg_t)(int, int, void *)
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__attribute__ ((noreturn));
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image_entry_arg_t image_entry =
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(image_entry_arg_t) spl_image.entry_point;
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cleanup_before_linux();
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image_entry(0, CONFIG_MACH_TYPE, arg);
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}
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#endif
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static void __noreturn jump_to_image_no_args(void)
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{
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typedef void __noreturn (*image_entry_noargs_t)(u32 *);
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image_entry_noargs_t image_entry =
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(image_entry_noargs_t) spl_image.entry_point;
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debug("image entry point: 0x%X\n", spl_image.entry_point);
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/* Pass the saved boot_params from rom code */
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#if defined(CONFIG_VIRTIO) || defined(CONFIG_ZEBU)
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image_entry = (image_entry_noargs_t)0x80100000;
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#endif
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u32 boot_params_ptr_addr = (u32)&boot_params_ptr;
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image_entry((u32 *)boot_params_ptr_addr);
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}
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void board_init_r(gd_t *id, ulong dummy)
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{
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u32 boot_device;
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debug(">>spl:board_init_r()\n");
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mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
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CONFIG_SYS_SPL_MALLOC_SIZE);
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#ifdef CONFIG_SPL_BOARD_INIT
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spl_board_init();
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#endif
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boot_device = omap_boot_device();
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debug("boot device - %d\n", boot_device);
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switch (boot_device) {
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#ifdef CONFIG_SPL_MMC_SUPPORT
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case BOOT_DEVICE_MMC1:
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case BOOT_DEVICE_MMC2:
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case BOOT_DEVICE_MMC2_2:
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spl_mmc_load_image();
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break;
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#endif
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#ifdef CONFIG_SPL_NAND_SUPPORT
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case BOOT_DEVICE_NAND:
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spl_nand_load_image();
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break;
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#endif
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#ifdef CONFIG_SPL_YMODEM_SUPPORT
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case BOOT_DEVICE_UART:
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spl_ymodem_load_image();
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break;
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#endif
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default:
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printf("SPL: Un-supported Boot Device - %d!!!\n", boot_device);
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hang();
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break;
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}
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switch (spl_image.os) {
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case IH_OS_U_BOOT:
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debug("Jumping to U-Boot\n");
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jump_to_image_no_args();
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break;
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#ifdef CONFIG_SPL_OS_BOOT
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case IH_OS_LINUX:
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debug("Jumping to Linux\n");
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spl_board_prepare_for_linux();
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jump_to_image_linux((void *)CONFIG_SYS_SPL_ARGS_ADDR);
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break;
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#endif
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default:
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puts("Unsupported OS image.. Jumping nevertheless..\n");
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jump_to_image_no_args();
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}
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}
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/* This requires UART clocks to be enabled */
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void preloader_console_init(void)
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{
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const char *u_boot_rev = U_BOOT_VERSION;
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gd = &gdata;
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gd->bd = &bdata;
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gd->flags |= GD_FLG_RELOC;
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gd->baudrate = CONFIG_BAUDRATE;
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serial_init(); /* serial communications setup */
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gd->have_console = 1;
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/* Avoid a second "U-Boot" coming from this string */
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u_boot_rev = &u_boot_rev[7];
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printf("\nU-Boot SPL %s (%s - %s)\n", u_boot_rev, U_BOOT_DATE,
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U_BOOT_TIME);
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omap_rev_string();
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}
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void __weak omap_rev_string()
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{
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printf("Texas Instruments Revision detection unimplemented\n");
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}
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