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skylake: sanitize pcr header for ACPI and assembler 

Remove the C types and functions from PCR so that pcr.h
can be included from assembly and ACPI. While in there
make the PCR reg caclulation using a C function and
place the P2SB (PCH_PCR_BASE_ADDRESS) address in iomap.h.

BUG=None
BRANCH=None
TEST=Built and booted glados.

Change-Id: I9cde178bcdbf49327ef7892393fc277f6c74f34b
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: fdf5c77ecfa0ca8d3c45604d15b9dec9a6e85193
Original-Change-Id: I5996efaa9869f8f412e4d45c13f30233384a38b2
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/286901
Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/11030
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Aaron Durbin 2015-07-20 16:46:19 -05:00 committed by Patrick Georgi
parent 1383920fef
commit 97892bd557
3 changed files with 61 additions and 59 deletions
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3
src/soc/intel/skylake/include/soc/iomap.h
View File

@ -24,6 +24,9 @@
#define MCFG_BASE_ADDRESS CONFIG_MMCONF_BASE_ADDRESS
#define MCFG_BASE_SIZE 0x4000000
#define PCH_PCR_BASE_ADDRESS 0xfd000000
#define PCH_BCR_BASE_SIZE 0x1000000
#define MCH_BASE_ADDRESS 0xfed10000
#define MCH_BASE_SIZE 0x8000

59
src/soc/intel/skylake/include/soc/pcr.h
View File

@ -20,8 +20,9 @@
* Primary to sideband (P2SB) for private configuration registers (PCR).
*/
/* PCH (SunRisePoint LP) */
#define PCH_PCR_BASE_ADDRESS 0xFD000000
/* Port Id lives in bits 23:16 and register offset lives in 15:0 of address. */
#define PCR_PORTID_SHIFT 16
#define PCR_OFFSET_SHIFT 0
/* DMI Control Register */
#define R_PCH_PCR_DMI_DMIC 0x2234
@ -70,38 +71,30 @@
#define SIO_PCH_LEGACY_UART2 (1 << 2)
/*
* Definition for PCR address
* The PCR address is used to the PCR MMIO programming
* P2SB port ids.
*/
#define PCH_PCR_ADDRESS(pid, offset) (void *)(\
PCH_PCR_BASE_ADDRESS | ((u8)(pid) << 16) | (u16)(offset))
#define PID_PSTH 0x89
#define PID_GPIOCOM3 0xAC
#define PID_GPIOCOM2 0xAD
#define PID_GPIOCOM1 0xAE
#define PID_GPIOCOM0 0xAF
#define PID_LPC 0xC7
#define PID_ITSS 0xC4
#define PID_RTC 0xC3
#define PID_SERIALIO 0xCB
#define PID_DMI 0xEF
/*
* Definition for SBI PID
* The PCH_SBI_PID defines the PID for PCR MMIO programming and
* PCH SBI programming as well.
*/
typedef enum {
PID_PSTH = 0x89,
PID_GPIOCOM3 = 0xAC,
PID_GPIOCOM2 = 0xAD,
PID_GPIOCOM1 = 0xAE,
PID_GPIOCOM0 = 0xAF,
PID_LPC = 0xC7,
PID_ITSS = 0xC4,
PID_RTC = 0xC3,
PID_SERIALIO = 0xCB,
PID_DMI = 0xEF,
} PCH_SBI_PID;
u8 pcr_read32(PCH_SBI_PID pid, u16 offset, u32 *outdata);
u8 pcr_read16(PCH_SBI_PID pid, u16 offset, u16 *outdata);
u8 pcr_read8(PCH_SBI_PID pid, u16 offset, u8 *outdata);
u8 pcr_write32(PCH_SBI_PID pid, u16 offset, u32 indata);
u8 pcr_write16(PCH_SBI_PID pid, u16 offset, u16 indata);
u8 pcr_write8(PCH_SBI_PID pid, u16 offset, u8 indata);
u8 pcr_andthenor32(PCH_SBI_PID pid, u16 offset, u32 anddata, u32 ordata);
u8 pcr_andthenor16(PCH_SBI_PID pid, u16 offset, u16 anddata, u16 ordata);
u8 pcr_andthenor8(PCH_SBI_PID pid, u16 offset, u8 anddata, u8 ordata);
#if !defined(__ASSEMBLER__) && !defined(__ACPI__)
/* 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);
int pcr_read8(u8 pid, u16 offset, u8 *outdata);
int pcr_write32(u8 pid, u16 offset, u32 indata);
int pcr_write16(u8 pid, u16 offset, u16 indata);
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);
#endif /* if !defined(__ASSEMBLER__) && !defined(__ACPI__) */
#endif /* _SOC_PCR_H_ */

58
src/soc/intel/skylake/pcr.c
View File

@ -22,15 +22,24 @@
#include <soc/iomap.h>
#include <console/console.h>
static inline void *pcr_reg_address(u8 pid, u16 offset)
{
uintptr_t reg_addr;
/* Create an address based off of port id and offset. */
reg_addr = PCH_PCR_BASE_ADDRESS;
reg_addr += ((uintptr_t)pid) << PCR_PORTID_SHIFT;
reg_addr += ((uintptr_t)offset) << PCR_OFFSET_SHIFT;
return (void *)reg_addr;
}
/*
* Read PCR register. (This is internal function)
* It returns PCR register and size in 1/2/4 bytes.
* The offset should not exceed 0xFFFF and must be aligned with size
*
* PCH_SBI_PID defines as 8 bit Port ID that will be used when sending
* transaction to sideband.
*/
static u8 pch_pcr_read(PCH_SBI_PID pid, u16 offset, u32 size, void *data)
static int pch_pcr_read(u8 pid, u16 offset, u32 size, void *data)
{
if ((offset & (size - 1)) != 0) {
printk(BIOS_DEBUG,
@ -40,13 +49,13 @@ static u8 pch_pcr_read(PCH_SBI_PID pid, u16 offset, u32 size, void *data)
}
switch (size) {
case 4:
*(u32 *) data = read32(PCH_PCR_ADDRESS(pid, offset));
*(u32 *) data = read32(pcr_reg_address(pid, offset));
break;
case 2:
*(u16 *) data = read16(PCH_PCR_ADDRESS(pid, offset));
*(u16 *) data = read16(pcr_reg_address(pid, offset));
break;
case 1:
*(u8 *) data = read8(PCH_PCR_ADDRESS(pid, offset));
*(u8 *) data = read8(pcr_reg_address(pid, offset));
break;
default:
break;
@ -54,17 +63,17 @@ static u8 pch_pcr_read(PCH_SBI_PID pid, u16 offset, u32 size, void *data)
return 0;
}
u8 pcr_read32(PCH_SBI_PID pid, u16 offset, u32 *outdata)
int pcr_read32(u8 pid, u16 offset, u32 *outdata)
{
return pch_pcr_read(pid, offset, sizeof(u32), (u32 *)outdata);
}
u8 pcr_read16(PCH_SBI_PID pid, u16 offset, u16 *outdata)
int pcr_read16(u8 pid, u16 offset, u16 *outdata)
{
return pch_pcr_read(pid, offset, sizeof(u16), (u32 *)outdata);
}
u8 pcr_read8(PCH_SBI_PID pid, u16 offset, u8 *outdata)
int pcr_read8(u8 pid, u16 offset, u8 *outdata)
{
return pch_pcr_read(pid, offset, sizeof(u8), (u32 *)outdata);
}
@ -79,18 +88,15 @@ static inline void complete_write(void)
{
/* Read the general control and function disable register. */
const size_t R_PCH_PCR_LPC_GCFD = 0x3418;
read32(PCH_PCR_ADDRESS(PID_LPC, R_PCH_PCR_LPC_GCFD));
read32(pcr_reg_address(PID_LPC, R_PCH_PCR_LPC_GCFD));
}
/*
* Write PCR register. (This is internal function)
* It returns PCR register and size in 1/2/4 bytes.
* The offset should not exceed 0xFFFF and must be aligned with size
*
* PCH_SBI_PID defines as 8 bit Port ID that will be used when sending
* transaction to sideband.
*/
static u8 pch_pcr_write(PCH_SBI_PID pid, u16 offset, u32 size, u32 data)
static int pch_pcr_write(u8 pid, u16 offset, u32 size, u32 data)
{
if ((offset & (size - 1)) != 0) {
printk(BIOS_DEBUG,
@ -103,13 +109,13 @@ static u8 pch_pcr_write(PCH_SBI_PID pid, u16 offset, u32 size, u32 data)
*/
switch (size) {
case 4:
write32(PCH_PCR_ADDRESS(pid, offset), (u32) data);
write32(pcr_reg_address(pid, offset), (u32) data);
break;
case 2:
write16(PCH_PCR_ADDRESS(pid, offset), (u16) data);
write16(pcr_reg_address(pid, offset), (u16) data);
break;
case 1:
write8(PCH_PCR_ADDRESS(pid, offset), (u8) data);
write8(pcr_reg_address(pid, offset), (u8) data);
break;
default:
break;
@ -120,17 +126,17 @@ static u8 pch_pcr_write(PCH_SBI_PID pid, u16 offset, u32 size, u32 data)
return 0;
}
u8 pcr_write32(PCH_SBI_PID pid, u16 offset, u32 indata)
int pcr_write32(u8 pid, u16 offset, u32 indata)
{
return pch_pcr_write(pid, offset, sizeof(u32), indata);
}
u8 pcr_write16(PCH_SBI_PID pid, u16 offset, u16 indata)
int pcr_write16(u8 pid, u16 offset, u16 indata)
{
return pch_pcr_write(pid, offset, sizeof(u16), indata);
}
u8 pcr_write8(PCH_SBI_PID pid, u16 offset, u8 indata)
int pcr_write8(u8 pid, u16 offset, u8 indata)
{
return pch_pcr_write(pid, offset, sizeof(u8), indata);
}
@ -140,10 +146,10 @@ u8 pcr_write8(PCH_SBI_PID pid, u16 offset, u8 indata)
* It programs PCR register and size in 1/2/4 bytes.
* The offset should not exceed 0xFFFF and must be aligned with size
*
* PCH_SBI_PID defines as 8 bit Port ID that will be used when sending
* u8 defines as 8 bit Port ID that will be used when sending
* transaction to sideband.
*/
static u8 pcr_and_then_or(PCH_SBI_PID pid, u16 offset, u32 size, u32 anddata,
static int pcr_and_then_or(u8 pid, u16 offset, u32 size, u32 anddata,
u32 ordata)
{
u8 status;
@ -160,17 +166,17 @@ static u8 pcr_and_then_or(PCH_SBI_PID pid, u16 offset, u32 size, u32 anddata,
return status;
}
u8 pcr_andthenor32(PCH_SBI_PID pid, u16 offset, u32 anddata, u32 ordata)
int pcr_andthenor32(u8 pid, u16 offset, u32 anddata, u32 ordata)
{
return pcr_and_then_or(pid, offset, sizeof(u32), anddata, ordata);
}
u8 pcr_andthenor16(PCH_SBI_PID pid, u16 offset, u16 anddata, u16 ordata)
int pcr_andthenor16(u8 pid, u16 offset, u16 anddata, u16 ordata)
{
return pcr_and_then_or(pid, offset, sizeof(u16), anddata, ordata);
}
u8 pcr_andthenor8(PCH_SBI_PID pid, u16 offset, u8 anddata, u8 ordata)
int pcr_andthenor8(u8 pid, u16 offset, u8 anddata, u8 ordata)
{
return pcr_and_then_or(pid, offset, sizeof(u8), anddata, ordata);
}