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868444faa0
We have not strictly speaking relocated at this point, do not claim that we have. This is not required for output. Signed-off-by: Tom Rini <trini@ti.com>
248 lines
6.2 KiB
C
248 lines
6.2 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 <spl.h>
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#include <asm/u-boot.h>
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#include <nand.h>
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#include <fat.h>
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#include <version.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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#ifndef CONFIG_SYS_UBOOT_START
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#define CONFIG_SYS_UBOOT_START CONFIG_SYS_TEXT_BASE
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#endif
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#ifndef CONFIG_SYS_MONITOR_LEN
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#define CONFIG_SYS_MONITOR_LEN (200 * 1024)
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#endif
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u32 *boot_params_ptr = NULL;
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struct spl_image_info spl_image;
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/* Define board data structure */
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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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/*
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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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puts("SPL: Please implement spl_start_uboot() for your board\n");
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puts("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 (image_get_magic(header) == IH_MAGIC) {
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if (spl_image.flags & SPL_COPY_PAYLOAD_ONLY) {
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/*
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* On some system (e.g. powerpc), the load-address and
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* entry-point is located at address 0. We can't load
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* to 0-0x40. So skip header in this case.
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*/
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spl_image.load_addr = image_get_load(header);
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spl_image.entry_point = image_get_ep(header);
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spl_image.size = image_get_data_size(header);
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} else {
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spl_image.entry_point = image_get_load(header);
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/* Load including the header */
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spl_image.load_addr = spl_image.entry_point -
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header_size;
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spl_image.size = image_get_data_size(header) +
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header_size;
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}
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spl_image.os = image_get_os(header);
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spl_image.name = image_get_name(header);
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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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debug("mkimage signature not found - ih_magic = %x\n",
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header->ih_magic);
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/* Let's assume U-Boot will not be more than 200 KB */
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spl_image.size = CONFIG_SYS_MONITOR_LEN;
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spl_image.entry_point = CONFIG_SYS_UBOOT_START;
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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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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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#ifdef CONFIG_SPL_RAM_DEVICE
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static void spl_ram_load_image(void)
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{
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const struct image_header *header;
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/*
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* Get the header. It will point to an address defined by handoff
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* which will tell where the image located inside the flash. For
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* now, it will temporary fixed to address pointed by U-Boot.
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*/
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header = (struct image_header *)
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(CONFIG_SYS_TEXT_BASE - sizeof(struct image_header));
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spl_parse_image_header(header);
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}
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#endif
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void board_init_r(gd_t *dummy1, ulong dummy2)
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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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#ifdef CONFIG_SYS_SPL_MALLOC_START
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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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#endif
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timer_init();
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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 = spl_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_RAM_DEVICE
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case BOOT_DEVICE_RAM:
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spl_ram_load_image();
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break;
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#endif
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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_NOR_SUPPORT
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case BOOT_DEVICE_NOR:
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spl_nor_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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#ifdef CONFIG_SPL_SPI_SUPPORT
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case BOOT_DEVICE_SPI:
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spl_spi_load_image();
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break;
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#endif
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#ifdef CONFIG_SPL_ETH_SUPPORT
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case BOOT_DEVICE_CPGMAC:
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#ifdef CONFIG_SPL_ETH_DEVICE
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spl_net_load_image(CONFIG_SPL_ETH_DEVICE);
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#else
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spl_net_load_image(NULL);
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#endif
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break;
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#endif
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default:
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debug("SPL: Un-supported Boot Device\n");
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hang();
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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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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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#endif
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default:
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debug("Unsupported OS image.. Jumping nevertheless..\n");
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}
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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. In order for this to work the
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* caller must ensure that the gd pointer is valid.
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*/
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void preloader_console_init(void)
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{
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gd->bd = &bdata;
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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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puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
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U_BOOT_TIME ")\n");
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#ifdef CONFIG_SPL_DISPLAY_PRINT
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spl_display_print();
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#endif
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}
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