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drivers/intel/fsp2_0: Add simple reset handler 

Any FSP API call may request a reset. This is indicated in API function
return code. Add trivial reset handler code.

BUG=chrome-os-partner:54149
BRANCH=none
TEST=none

Change-Id: Ieb5e2d52ffdaf3c3ed416603f6dbb4f9c25a1a7b
Signed-off-by: Andrey Petrov <andrey.petrov@intel.com>
Reviewed-on: https://review.coreboot.org/15334
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Andrey Petrov 2016-06-22 19:22:30 -07:00 committed by Martin Roth
parent 3dbea29ee6
commit 901e43c904
2 changed files with 30 additions and 0 deletions
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6
src/drivers/intel/fsp2_0/include/fsp/util.h
View File

@ -14,6 +14,7 @@
#define _FSP2_0_UTIL_H_
#include <boot/coreboot_tables.h>
#include <fsp/api.h>
#include <fsp/info_header.h>
#include <memrange.h>
@ -39,4 +40,9 @@ enum cb_err fsp_load_binary(struct fsp_header *hdr, const char *name,
/* Load a vbt.bin file for graphics. Returns 0 if a valid VBT is not found. */
uintptr_t fsp_load_vbt(void);
/* Trivial handling of reset exit statuses */
void fsp_handle_reset(enum fsp_status status);
/* Returns true if the non-success status is a reset request */
bool fsp_reset_requested(enum fsp_status status);
#endif /* _FSP2_0_UTIL_H_ */

24
src/drivers/intel/fsp2_0/util.c
View File

@ -18,6 +18,7 @@
#include <lib.h>
#include <memrange.h>
#include <program_loading.h>
#include <reset.h>
#include <string.h>
static bool looks_like_fsp_header(const uint8_t *raw_hdr)
@ -160,3 +161,26 @@ enum cb_err fsp_load_binary(struct fsp_header *hdr,
return CB_SUCCESS;
}
void fsp_handle_reset(enum fsp_status status)
{
switch(status) {
case FSP_STATUS_RESET_REQUIRED_COLD:
hard_reset();
break;
case FSP_STATUS_RESET_REQUIRED_WARM:
soft_reset();
break;
case FSP_STATUS_RESET_REQUIRED_GLOBAL_RESET:
global_reset();
break;
default:
break;
}
}
bool fsp_reset_requested(enum fsp_status status)
{
return (status >= FSP_STATUS_RESET_REQUIRED_COLD &&
status <= FSP_STATUS_RESET_REQUIRED_GLOBAL_RESET);
}