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libpayload: Allow using CBFS functions on images in RAM 

Two new functions allow switching the CBFS functions from using RAM
or ROM, with ROM as default.

Change-Id: I04d67ad622d25c5728ae9a63f5b8a3dc9bbacce6
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/550
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Patrick Georgi 2012-01-17 15:52:05 +01:00 committed by Patrick Georgi
parent e8689ed974
commit 409d17dee7
2 changed files with 29 additions and 4 deletions
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2
payloads/libpayload/include/cbfs.h
View File

@ -1,2 +1,4 @@
#include <arch/types.h>
#include "cbfs_core.h"
void setup_cbfs_from_ram(void* start, uint32_t size);
void setup_cbfs_from_flash(void);

31
payloads/libpayload/libcbfs/cbfs.c
View File

@ -40,18 +40,18 @@
#define ERROR(x...) printf(x)
#define LOG(x...)
uint32_t host_virt_to_phys(void *addr);
void *host_phys_to_virt(uint32_t addr);
static uint32_t host_virt_to_phys(void *addr);
static void *host_phys_to_virt(uint32_t addr);
uint32_t romstart(void);
uint32_t romend(void);
#include <arch/virtual.h>
uint32_t host_virt_to_phys(void *addr) {
static uint32_t host_virt_to_phys(void *addr) {
return virt_to_phys(addr);
}
void *host_phys_to_virt(uint32_t addr) {
static void *host_phys_to_virt(uint32_t addr) {
return phys_to_virt(addr);
}
#undef virt_to_phys
@ -76,3 +76,26 @@ uint32_t romend(void)
#include "cbfs_core.c"
static uint32_t ram_cbfs_offset;
static uint32_t ram_virt_to_phys(void *addr) {
return (uint32_t)addr - ram_cbfs_offset;
}
static void *ram_phys_to_virt(uint32_t addr) {
return (void*)addr + ram_cbfs_offset;
}
void setup_cbfs_from_ram(void* start, uint32_t size)
{
/* assumes rollover */
ram_cbfs_offset = (uint32_t)start + size;
virt_to_phys = ram_virt_to_phys;
phys_to_virt = ram_phys_to_virt;
}
void setup_cbfs_from_flash()
{
virt_to_phys = host_virt_to_phys;
phys_to_virt = host_phys_to_virt;
}