projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 32b11273 CR |
1 | /* |
| 2 | * Copyright (C) 2011 OMICRON electronics GmbH | |
| 3 | * | |
| 4 | * based on drivers/mtd/nand/nand_spl_load.c | |
| 5 | * | |
| 6 | * Copyright (C) 2011 | |
| 7 | * Heiko Schocher, DENX Software Engineering, hs@denx.de. | |
| 8 | * | |
| 1a459660 | 9 | * SPDX-License-Identifier: GPL-2.0+ |
| 32b11273 CR |
10 | */ |
| 11 | ||
| 12 | #include <common.h> | |
| 13 | #include <spi_flash.h> | |
| a4cc1c48 | 14 | #include <spl.h> |
| 32b11273 | 15 | |
| fa1a73fa TR |
16 | #ifdef CONFIG_SPL_OS_BOOT |
| 17 | /* | |
| 18 | * Load the kernel, check for a valid header we can parse, and if found load | |
| 19 | * the kernel and then device tree. | |
| 20 | */ | |
| 21 | static int spi_load_image_os(struct spi_flash *flash, | |
| 22 | struct image_header *header) | |
| 23 | { | |
| 24 | /* Read for a header, parse or error out. */ | |
| 25 | spi_flash_read(flash, CONFIG_SYS_SPI_KERNEL_OFFS, 0x40, | |
| 26 | (void *)header); | |
| 27 | ||
| 28 | if (image_get_magic(header) != IH_MAGIC) | |
| 29 | return -1; | |
| 30 | ||
| 31 | spl_parse_image_header(header); | |
| 32 | ||
| 33 | spi_flash_read(flash, CONFIG_SYS_SPI_KERNEL_OFFS, | |
| 34 | spl_image.size, (void *)spl_image.load_addr); | |
| 35 | ||
| 36 | /* Read device tree. */ | |
| 37 | spi_flash_read(flash, CONFIG_SYS_SPI_ARGS_OFFS, | |
| 38 | CONFIG_SYS_SPI_ARGS_SIZE, | |
| 39 | (void *)CONFIG_SYS_SPL_ARGS_ADDR); | |
| 40 | ||
| 41 | return 0; | |
| 42 | } | |
| 43 | #endif | |
| 44 | ||
| 32b11273 CR |
45 | /* |
| 46 | * The main entry for SPI booting. It's necessary that SDRAM is already | |
| 47 | * configured and available since this code loads the main U-Boot image | |
| 48 | * from SPI into SDRAM and starts it from there. | |
| 49 | */ | |
| a4cc1c48 | 50 | void spl_spi_load_image(void) |
| 32b11273 CR |
51 | { |
| 52 | struct spi_flash *flash; | |
| a4cc1c48 | 53 | struct image_header *header; |
| 32b11273 CR |
54 | |
| 55 | /* | |
| 56 | * Load U-Boot image from SPI flash into RAM | |
| 57 | */ | |
| 58 | ||
| 88e34e5f NK |
59 | flash = spi_flash_probe(CONFIG_SF_DEFAULT_BUS, |
| 60 | CONFIG_SF_DEFAULT_CS, | |
| 61 | CONFIG_SF_DEFAULT_SPEED, | |
| 62 | CONFIG_SF_DEFAULT_MODE); | |
| 32b11273 | 63 | if (!flash) { |
| a4cc1c48 | 64 | puts("SPI probe failed.\n"); |
| 32b11273 CR |
65 | hang(); |
| 66 | } | |
| 67 | ||
| a4cc1c48 TR |
68 | /* use CONFIG_SYS_TEXT_BASE as temporary storage area */ |
| 69 | header = (struct image_header *)(CONFIG_SYS_TEXT_BASE); | |
| 32b11273 | 70 | |
| fa1a73fa TR |
71 | #ifdef CONFIG_SPL_OS_BOOT |
| 72 | if (spl_start_uboot() || spi_load_image_os(flash, header)) | |
| 73 | #endif | |
| 74 | { | |
| 75 | /* Load u-boot, mkimage header is 64 bytes. */ | |
| 76 | spi_flash_read(flash, CONFIG_SYS_SPI_U_BOOT_OFFS, 0x40, | |
| 77 | (void *)header); | |
| 78 | spl_parse_image_header(header); | |
| 79 | spi_flash_read(flash, CONFIG_SYS_SPI_U_BOOT_OFFS, | |
| 80 | spl_image.size, (void *)spl_image.load_addr); | |
| 81 | } | |
| 32b11273 | 82 | } |