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skylake: Prepare GPE for use in bootblock 

Export the pmc_gpe_init() function from pmc.c to pmutil.c
so it can be used in bootblock, and then call it from there
to initialize any GPEs for use in firmware.

BUG=chrome-os-partner:58666
TEST=test working GPE as TPM interrupt on skylake board

Change-Id: I6b4f7d0aa689db42dc455075f84ab5694e8c9661
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://review.coreboot.org/17135
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
This commit is contained in:
Duncan Laurie 2016-10-25 20:03:56 -07:00
parent 64ce1d122c
commit f0ba2259b8
5 changed files with 56 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
src/soc/intel/skylake/bootblock/pch.c
View File

@ -301,6 +301,9 @@ void pch_early_init(void)
/* Program SMBUS_BASE_ADDRESS and Enable it */
enable_smbus();
/* Set up GPE configuration */
pmc_gpe_init();
soc_config_rtc();
enable_heci();

2
src/soc/intel/skylake/include/soc/pci_devs.h
View File

@ -23,7 +23,7 @@
#define _SA_DEVFN(slot) PCI_DEVFN(SA_DEV_SLOT_ ## slot, 0)
#define _PCH_DEVFN(slot, func) PCI_DEVFN(PCH_DEV_SLOT_ ## slot, func)
#if ENV_RAMSTAGE
#if ENV_RAMSTAGE && !defined(__SIMPLE_DEVICE__)
#include <device/device.h>
#include <device/pci_def.h>
#define _SA_DEV(slot) dev_find_slot(0, _SA_DEVFN(slot))

3
src/soc/intel/skylake/include/soc/pm.h
View File

@ -186,6 +186,9 @@ uint16_t smbus_tco_regs(void);
/* Set the DISB after DRAM init */
void pmc_set_disb(void);
/* Initialize GPEs */
void pmc_gpe_init(void);
static inline int deep_s3_enabled(void)
{
uint32_t deep_s3_pol;

39
src/soc/intel/skylake/pmc.c
View File

@ -129,42 +129,6 @@ static void pch_rtc_init(void)
cmos_init(rtc_failed);
}
static void pmc_gpe_init(config_t *config)
{
uint8_t *pmc_regs;
uint32_t gpio_cfg;
uint32_t gpio_cfg_reg;
const uint32_t gpio_cfg_mask =
(GPE0_DWX_MASK << GPE0_DW0_SHIFT) |
(GPE0_DWX_MASK << GPE0_DW1_SHIFT) |
(GPE0_DWX_MASK << GPE0_DW2_SHIFT);
pmc_regs = pmc_mmio_regs();
gpio_cfg = 0;
/* Route the GPIOs to the GPE0 block. Determine that all values
* are different, and if they aren't use the reset values. */
if (config->gpe0_dw0 == config->gpe0_dw1 ||
config->gpe0_dw1 == config->gpe0_dw2) {
printk(BIOS_INFO, "PMC: Using default GPE route.\n");
gpio_cfg = read32(pmc_regs + GPIO_CFG);
} else {
gpio_cfg |= (uint32_t)config->gpe0_dw0 << GPE0_DW0_SHIFT;
gpio_cfg |= (uint32_t)config->gpe0_dw1 << GPE0_DW1_SHIFT;
gpio_cfg |= (uint32_t)config->gpe0_dw2 << GPE0_DW2_SHIFT;
}
gpio_cfg_reg = read32(pmc_regs + GPIO_CFG) & ~gpio_cfg_mask;
gpio_cfg_reg |= gpio_cfg & gpio_cfg_mask;
write32(pmc_regs + GPIO_CFG, gpio_cfg_reg);
/* Set the routes in the GPIO communities as well. */
gpio_route_gpe(gpio_cfg_reg >> GPE0_DW0_SHIFT);
/* Set GPE enables based on devictree. */
enable_all_gpe(config->gpe0_en_1, config->gpe0_en_2,
config->gpe0_en_3, config->gpe0_en_4);
}
static void pch_power_options(void)
{
u16 reg16;
@ -172,7 +136,6 @@ static void pch_power_options(void)
/*PMC Controller Device 0x1F, Func 02*/
device_t dev = PCH_DEV_PMC;
/* Get the chip configuration */
config_t *config = dev->chip_info;
int pwr_on = CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL;
/*
@ -207,7 +170,7 @@ static void pch_power_options(void)
printk(BIOS_INFO, "Set power %s after power failure.\n", state);
/* Set up GPE configuration. */
pmc_gpe_init(config);
pmc_gpe_init();
}
static void config_deep_sX(uint32_t offset, uint32_t mask, int sx, int enable)

48
src/soc/intel/skylake/pmutil.c
View File

@ -19,6 +19,8 @@
* and the differences between PCH variants.
*/
#define __SIMPLE_DEVICE__
#include <arch/io.h>
#include <device/device.h>
#include <device/pci.h>
@ -27,6 +29,7 @@
#include <halt.h>
#include <rules.h>
#include <stdlib.h>
#include <soc/gpe.h>
#include <soc/gpio.h>
#include <soc/iomap.h>
#include <soc/lpc.h>
@ -34,6 +37,7 @@
#include <soc/pm.h>
#include <soc/pmc.h>
#include <soc/smbus.h>
#include "chip.h"
/* Print status bits with descriptive names */
static void print_status_bits(u32 status, const char *bit_names[])
@ -465,3 +469,47 @@ void poweroff(void)
if (!ENV_SMM)
halt();
}
void pmc_gpe_init(void)
{
ROMSTAGE_CONST struct soc_intel_skylake_config *config;
ROMSTAGE_CONST struct device *dev = dev_find_slot(0, PCH_DEVFN_PMC);
uint8_t *pmc_regs;
uint32_t gpio_cfg;
uint32_t gpio_cfg_reg;
const uint32_t gpio_cfg_mask =
(GPE0_DWX_MASK << GPE0_DW0_SHIFT) |
(GPE0_DWX_MASK << GPE0_DW1_SHIFT) |
(GPE0_DWX_MASK << GPE0_DW2_SHIFT);
/* Look up the device in devicetree */
if (!dev || !dev->chip_info) {
printk(BIOS_ERR, "BUG! Could not find SOC devicetree config\n");
return;
}
config = dev->chip_info;
pmc_regs = pmc_mmio_regs();
/* Route the GPIOs to the GPE0 block. Determine that all values
* are different, and if they aren't use the reset values. */
gpio_cfg = 0;
if (config->gpe0_dw0 == config->gpe0_dw1 ||
config->gpe0_dw1 == config->gpe0_dw2) {
printk(BIOS_INFO, "PMC: Using default GPE route.\n");
gpio_cfg = read32(pmc_regs + GPIO_CFG);
} else {
gpio_cfg |= (uint32_t)config->gpe0_dw0 << GPE0_DW0_SHIFT;
gpio_cfg |= (uint32_t)config->gpe0_dw1 << GPE0_DW1_SHIFT;
gpio_cfg |= (uint32_t)config->gpe0_dw2 << GPE0_DW2_SHIFT;
}
gpio_cfg_reg = read32(pmc_regs + GPIO_CFG) & ~gpio_cfg_mask;
gpio_cfg_reg |= gpio_cfg & gpio_cfg_mask;
write32(pmc_regs + GPIO_CFG, gpio_cfg_reg);
/* Set the routes in the GPIO communities as well. */
gpio_route_gpe(gpio_cfg_reg >> GPE0_DW0_SHIFT);
/* Set GPE enables based on devictree. */
enable_all_gpe(config->gpe0_en_1, config->gpe0_en_2,
config->gpe0_en_3, config->gpe0_en_4);
}