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chromeos: Add code to read FMAP on ARM 

On ARM the SPI flash is not memory mapped. Use the CBFS
interface to map the correct portion.

Change-Id: I8ea9aa0119e90a892bf777313fdc389c4739154e
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: https://chromium-review.googlesource.com/169781
Reviewed-by: David Hendrix <dhendrix@chromium.org>
(cherry picked from commit a263d3717e82c43fe91e7c4e82d167e74bf27527)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6522
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
This commit is contained in:
Stefan Reinauer 2013-09-17 14:15:16 -07:00 committed by Isaac Christensen
parent da36bcf0d4
commit 9ad28b940f
1 changed files with 13 additions and 0 deletions
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13
src/vendorcode/google/chromeos/fmap.c
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@ -21,6 +21,7 @@
#include <stddef.h>
#include <string.h>
#include <console/console.h>
#include <cbfs.h>
#include "fmap.h"
/* Find FMAP data structure in ROM.
@ -36,9 +37,19 @@ const struct fmap *fmap_find(void)
* and possibly cros_bundle_firmware.
*/
#if CONFIG_ARCH_X86
/* wrapping around 0x100000000 */
const struct fmap *fmap = (void *)
(CONFIG_FLASHMAP_OFFSET - CONFIG_ROM_SIZE);
#elif CONFIG_ARCH_ARMV7
struct cbfs_media default_media, *media;
media = &default_media;
init_default_cbfs_media(media);
media->open(media);
const struct fmap *fmap = (void *)
media->map(media, CONFIG_FLASHMAP_OFFSET, 4096); // FIXME size
media->close(media);
#endif
if (memcmp(fmap, FMAP_SIGNATURE, sizeof(FMAP_SIGNATURE)-1)) {
printk(BIOS_DEBUG, "No FMAP found at %p.\n", fmap);
@ -104,9 +115,11 @@ int find_fmap_entry(const char name[], void **pointer)
base = (void *)(unsigned long)fmap->base;
printk(BIOS_DEBUG, "FMAP: %s base at %p\n", name, base);
} else {
#if CONFIG_ARCH_X86
base = (void *)(0 - CONFIG_ROM_SIZE);
printk(BIOS_WARNING, "FMAP: No valid base address, using"
" 0x%p\n", base);
#endif
}
*pointer = (void*) ((u32)base + area->offset);