diff options
Diffstat (limited to 'roms/u-boot/common/spl/spl_ram.c')
| -rw-r--r-- | roms/u-boot/common/spl/spl_ram.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/roms/u-boot/common/spl/spl_ram.c b/roms/u-boot/common/spl/spl_ram.c new file mode 100644 index 000000000..df1d5b43d --- /dev/null +++ b/roms/u-boot/common/spl/spl_ram.c @@ -0,0 +1,85 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2016 + * Xilinx, Inc. + * + * (C) Copyright 2016 + * Toradex AG + * + * Michal Simek <michal.simek@xilinx.com> + * Stefan Agner <stefan.agner@toradex.com> + */ +#include <common.h> +#include <binman_sym.h> +#include <image.h> +#include <log.h> +#include <mapmem.h> +#include <spl.h> +#include <linux/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 CONFIG_IS_ENABLED(DFU) + 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 { + ulong u_boot_pos = binman_sym(ulong, u_boot_any, image_pos); + + 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. + */ + debug("u_boot_pos = %lx\n", u_boot_pos); + if (u_boot_pos == BINMAN_SYM_MISSING) { + /* + * No binman support or no information. For now, fix it + * to the address pointed to by U-Boot. + */ + u_boot_pos = (ulong)spl_get_load_buffer(-sizeof(*header), + sizeof(*header)); + } + header = (struct image_header *)map_sysmem(u_boot_pos, 0); + + spl_parse_image_header(spl_image, header); + } + + return 0; +} +#if CONFIG_IS_ENABLED(RAM_DEVICE) +SPL_LOAD_IMAGE_METHOD("RAM", 0, BOOT_DEVICE_RAM, spl_ram_load_image); +#endif +#if CONFIG_IS_ENABLED(DFU) +SPL_LOAD_IMAGE_METHOD("DFU", 0, BOOT_DEVICE_DFU, spl_ram_load_image); +#endif + + |