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| author | Stefan Agner <stefan.agner@toradex.com> | 2016-12-23 06:51:53 (GMT) |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-01-14 21:46:26 (GMT) |
| commit | 22802f4e3a0a8ead928a0af06b7719b604a98afb (patch) | |
| tree | 9033e0ac38202883f80a26c3c5b832c9da44529a /common/spl/spl_ram.c | |
| parent | f417d40fe2f0663c5e98b1e123f6fb982b424450 (diff) | |
| download | u-boot-22802f4e3a0a8ead928a0af06b7719b604a98afb.tar.xz | |
spl: move RAM boot support in separate file
Add a new top-level config option so support booting an image stored
in RAM. This allows to move the RAM boot support into a sparate file
and having a single condition to compile that file.
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Diffstat (limited to 'common/spl/spl_ram.c')
| -rw-r--r-- | common/spl/spl_ram.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/common/spl/spl_ram.c b/common/spl/spl_ram.c new file mode 100644 index 0000000..b2645a1 --- /dev/null +++ b/common/spl/spl_ram.c @@ -0,0 +1,73 @@ +/* + * (C) Copyright 2016 + * Xilinx, Inc. + * + * (C) Copyright 2016 + * Toradex AG + * + * Michal Simek <michal.simek@xilinx.com> + * Stefan Agner <stefan.agner@toradex.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include <common.h> +#include <spl.h> +#include <libfdt.h> + +#ifndef CONFIG_SPL_LOAD_FIT_ADDRESS +# define CONFIG_SPL_LOAD_FIT_ADDRESS 0 +#endif + +static ulong spl_ram_load_read(struct spl_load_info *load, ulong sector, + ulong count, void *buf) +{ + debug("%s: sector %lx, count %lx, buf %lx\n", + __func__, sector, count, (ulong)buf); + memcpy(buf, (void *)(CONFIG_SPL_LOAD_FIT_ADDRESS + sector), count); + return count; +} + +static int spl_ram_load_image(struct spl_image_info *spl_image, + struct spl_boot_device *bootdev) +{ + struct image_header *header; + + header = (struct image_header *)CONFIG_SPL_LOAD_FIT_ADDRESS; + +#if defined(CONFIG_SPL_DFU_SUPPORT) + if (bootdev->boot_device == BOOT_DEVICE_DFU) + spl_dfu_cmd(0, "dfu_alt_info_ram", "ram", "0"); +#endif + + if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) && + image_get_magic(header) == FDT_MAGIC) { + struct spl_load_info load; + + debug("Found FIT\n"); + load.bl_len = 1; + load.read = spl_ram_load_read; + spl_load_simple_fit(spl_image, &load, 0, header); + } else { + debug("Legacy image\n"); + /* + * 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(spl_image, header); + } + + return 0; +} +#if defined(CONFIG_SPL_RAM_DEVICE) +SPL_LOAD_IMAGE_METHOD("RAM", 0, BOOT_DEVICE_RAM, spl_ram_load_image); +#endif +#if defined(CONFIG_SPL_DFU_SUPPORT) +SPL_LOAD_IMAGE_METHOD("DFU", 0, BOOT_DEVICE_DFU, spl_ram_load_image); +#endif + + |