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skylake: provide pcr helper to get a port's register space 

In order to aid users of the PCR register space provide
pcr_port_regs().

BUG=chrome-os-partner:42982
BRANCH=None
TEST=Built glados.

Change-Id: Ibfcffbfd4304a59dd80a88dc18404d3a5dfa2f5d
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Original-Commit-Id: 5f796319ba1d00557e32bf18309fc3cc772ccae0
Original-Change-Id: I21243d18c1bbd19468f8f279b2daa4e40a8f0699
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/288193
Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/11068
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Aaron Durbin 2015-07-23 20:48:06 -05:00 committed by Patrick Georgi
parent 4f5efb6c21
commit 8dfa660a68
2 changed files with 10 additions and 0 deletions
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5
src/soc/intel/skylake/include/soc/pcr.h
View File

@ -85,6 +85,8 @@
#define PID_DMI 0xEF
#if !defined(__ASSEMBLER__) && !defined(__ACPI__)
#include <stdint.h>
/* All these return 0 on success and < 0 on errror. */
int pcr_read32(u8 pid, u16 offset, u32 *outdata);
int pcr_read16(u8 pid, u16 offset, u16 *outdata);
@ -95,6 +97,9 @@ int pcr_write8(u8 pid, u16 offset, u8 indata);
int pcr_andthenor32(u8 pid, u16 offset, u32 anddata, u32 ordata);
int pcr_andthenor16(u8 pid, u16 offset, u16 anddata, u16 ordata);
int pcr_andthenor8(u8 pid, u16 offset, u8 anddata, u8 ordata);
/* Get the starting address of the port's registers. */
uint8_t *pcr_port_regs(u8 pid);
#endif /* if !defined(__ASSEMBLER__) && !defined(__ACPI__) */
#endif /* _SOC_PCR_H_ */

5
src/soc/intel/skylake/pcr.c
View File

@ -34,6 +34,11 @@ static inline void *pcr_reg_address(u8 pid, u16 offset)
return (void *)reg_addr;
}
uint8_t *pcr_port_regs(u8 pid)
{
return pcr_reg_address(pid, 0);
}
/*
* Read PCR register. (This is internal function)
* It returns PCR register and size in 1/2/4 bytes.