]> git.kernelconcepts.de Git - karo-tx-uboot.git/blob - drivers/mtd/spi/spi_spl_load.c
Merge branch 'u-boot-tegra/master' into 'u-boot-arm/master'
[karo-tx-uboot.git] / drivers / mtd / spi / spi_spl_load.c
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  *
9  * SPDX-License-Identifier:     GPL-2.0+
10  */
11
12 #include <common.h>
13 #include <spi_flash.h>
14 #include <spl.h>
15
16 /*
17  * The main entry for SPI booting. It's necessary that SDRAM is already
18  * configured and available since this code loads the main U-Boot image
19  * from SPI into SDRAM and starts it from there.
20  */
21 void spl_spi_load_image(void)
22 {
23         struct spi_flash *flash;
24         struct image_header *header;
25
26         /*
27          * Load U-Boot image from SPI flash into RAM
28          */
29
30         flash = spi_flash_probe(CONFIG_SPL_SPI_BUS, CONFIG_SPL_SPI_CS,
31                                 CONFIG_SF_DEFAULT_SPEED, SPI_MODE_3);
32         if (!flash) {
33                 puts("SPI probe failed.\n");
34                 hang();
35         }
36
37         /* use CONFIG_SYS_TEXT_BASE as temporary storage area */
38         header = (struct image_header *)(CONFIG_SYS_TEXT_BASE);
39
40         /* Load u-boot, mkimage header is 64 bytes. */
41         spi_flash_read(flash, CONFIG_SYS_SPI_U_BOOT_OFFS, 0x40,
42                        (void *)header);
43         spl_parse_image_header(header);
44         spi_flash_read(flash, CONFIG_SYS_SPI_U_BOOT_OFFS,
45                        spl_image.size, (void *)spl_image.load_addr);
46 }