diff options
| author | Hung-Te Lin <hungte@chromium.org> | 2013-01-22 18:57:56 +0800 |
|---|---|---|
| committer | Ronald G. Minnich <rminnich@gmail.com> | 2013-01-30 17:58:32 +0100 |
| commit | 6fe0cab205e131525efbfce4f59da344b1e76598 (patch) | |
| tree | 0ecd9e5059fd9bb2669f7487f39890beee14fcc3 /src/mainboard | |
| parent | 5fc64dca45b01556a9325bea0fb563d6f0d16f75 (diff) | |
Extend CBFS to support arbitrary ROM source media.
Summary:
Isolate CBFS underlying I/O to board/arch-specific implementations as
"media stream", to allow loading and booting romstage on non-x86.
CBFS functions now all take a new "media source" parameter; use
CBFS_DEFAULT_MEDIA if you simply want to load from main firmware.
API Changes:
cbfs_find => cbfs_get_file.
cbfs_find_file => cbfs_get_file_content.
cbfs_get_file => cbfs_get_file_content with correct type.
CBFS used to work only on memory-mapped ROM (all x86). For platforms like ARM,
the ROM may come from USB, UART, or SPI -- any serial devices and not available
for memory mapping.
To support these devices (and allowing CBFS to read from multiple source
at the same time), CBFS operations are now virtual-ized into "cbfs_media". To
simplify porting existing code, every media source must support both "reading
into pre-allocated memory (read)" and "read and return an allocated buffer
(map)". For devices without native memory-mapped ROM, "cbfs_simple_buffer*"
provides simple memory mapping simulation.
Every CBFS function now takes a cbfs_media* as parameter. CBFS_DEFAULT_MEDIA
is defined for CBFS functions to automatically initialize a per-board default
media (CBFS will internally calls init_default_cbfs_media). Also revised CBFS
function names relying on memory mapped backend (ex, "cbfs_find" => actually
loads files). Now we only have two getters:
struct cbfs_file *entry = cbfs_get_file(media, name);
void *data = cbfs_get_file_content(CBFS_DEFAULT_MEDIA, name, type);
Test results:
- Verified to work on x86/qemu.
- Compiles on ARM, and follow up commit will provide working SPI driver.
Change-Id: Iac911ded25a6f2feffbf3101a81364625bb07746
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: http://review.coreboot.org/2182
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/snow/bootblock.c | 4 | ||||
| -rw-r--r-- | src/mainboard/samsung/lumpy/romstage.c | 2 |
2 files changed, 5 insertions, 1 deletions
diff --git a/src/mainboard/google/snow/bootblock.c b/src/mainboard/google/snow/bootblock.c index d5ee0a378a..5b3efa025c 100644 --- a/src/mainboard/google/snow/bootblock.c +++ b/src/mainboard/google/snow/bootblock.c @@ -39,9 +39,13 @@ #include <drivers/maxim/max77686/max77686.h> #include <console/console.h> +#include <cbfs.h> #define EXYNOS5_CLOCK_BASE 0x10010000 +/* TODO Move to Makefile.inc once we support adding bootblock stage files. */ +#include "cpu/samsung/exynos5-common/spi.c" + /* FIXME(dhendrix): Can we move this SPI stuff elsewhere? */ static void spi_rx_tx(struct exynos_spi *regs, int todo, void *dinp, void const *doutp, int i) diff --git a/src/mainboard/samsung/lumpy/romstage.c b/src/mainboard/samsung/lumpy/romstage.c index 5600cf616d..9bc193bb56 100644 --- a/src/mainboard/samsung/lumpy/romstage.c +++ b/src/mainboard/samsung/lumpy/romstage.c @@ -301,7 +301,7 @@ void main(unsigned long bist) break; } - spd_file = cbfs_find("spd.bin"); + spd_file = cbfs_get_file(CBFS_DEFAULT_MEDIA, "spd.bin"); if (!spd_file) die("SPD data not found."); if (spd_file->len < (spd_index + 1) * 256) |