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authorAaron Durbin <adurbin@chromium.org>2015-05-15 23:39:23 -0500
committerPatrick Georgi <pgeorgi@google.com>2015-06-02 14:09:31 +0200
commit899d13d0dff9e7495eb17950f19431e9bd344b2f (patch)
tree8901845fc299126a7125ff19fe1f7bde17e3f305 /src/soc/samsung/exynos5250
parent68bdd00799c7b2b25f265fa9e31beb709c877eb6 (diff)
downloadcoreboot-899d13d0dff9e7495eb17950f19431e9bd344b2f.tar.xz
cbfs: new API and better program loading
A new CBFS API is introduced to allow making CBFS access easier for providing multiple CBFS sources. That is achieved by decoupling the cbfs source from a CBFS file. A CBFS source is described by a descriptor. It contains the necessary properties for walking a CBFS to locate a file. The CBFS file is then decoupled from the CBFS descriptor in that it's no longer needed to access the contents of the file. All of this is accomplished using the regions infrastructure by repsenting CBFS sources and files as region_devices. Because region_devices can be chained together forming subregions this allows one to decouple a CBFS source from a file. This also allows one to provide CBFS files that came from other sources for payload and/or stage loading. The program loading takes advantage of those very properties by allowing multiple sources for locating a program. Because of this we can reduce the overhead of loading programs because it's all done in the common code paths. Only locating the program is per source. Change-Id: I339b84fce95f03d1dbb63a0f54a26be5eb07f7c8 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/9134 Tested-by: build bot (Jenkins) Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src/soc/samsung/exynos5250')
-rw-r--r--src/soc/samsung/exynos5250/alternate_cbfs.c64
1 files changed, 0 insertions, 64 deletions
diff --git a/src/soc/samsung/exynos5250/alternate_cbfs.c b/src/soc/samsung/exynos5250/alternate_cbfs.c
index 546018a35a..cb6992199d 100644
--- a/src/soc/samsung/exynos5250/alternate_cbfs.c
+++ b/src/soc/samsung/exynos5250/alternate_cbfs.c
@@ -112,70 +112,6 @@ static int sdmmc_cbfs_open(void)
return 0;
}
-static int exynos_cbfs_open(struct cbfs_media *media) {
- return 0;
-}
-
-static int exynos_cbfs_close(struct cbfs_media *media) {
- return 0;
-}
-
-static size_t exynos_cbfs_read(struct cbfs_media *media, void *dest,
- size_t offset, size_t count) {
- const struct region_device *boot_dev;
-
- boot_dev = media->context;
-
- if (rdev_readat(boot_dev, dest, offset, count) < 0)
- return 0;
-
- return count;
-}
-
-static void *exynos_cbfs_map(struct cbfs_media *media, size_t offset,
- size_t count) {
- const struct region_device *boot_dev;
- void *ptr;
-
- boot_dev = media->context;
-
- ptr = rdev_mmap(boot_dev, offset, count);
-
- if (ptr == NULL)
- return (void *)-1;
-
- return ptr;
-}
-
-static void *exynos_cbfs_unmap(struct cbfs_media *media,
- const void *address) {
- const struct region_device *boot_dev;
-
- boot_dev = media->context;
-
- rdev_munmap(boot_dev, (void *)address);
-
- return NULL;
-}
-
-int init_default_cbfs_media(struct cbfs_media *media)
-{
- boot_device_init();
-
- media->context = (void *)boot_device_ro();
-
- if (media->context == NULL)
- return -1;
-
- media->open = exynos_cbfs_open;
- media->close = exynos_cbfs_close;
- media->read = exynos_cbfs_read;
- media->map = exynos_cbfs_map;
- media->unmap = exynos_cbfs_unmap;
-
- return 0;
-}
-
static struct mem_region_device alternate_rdev = MEM_REGION_DEV_INIT(NULL, 0);
const struct region_device *boot_device_ro(void)