diff options
| author | Duncan Laurie <dlaurie@chromium.org> | 2016-10-25 20:03:56 -0700 |
|---|---|---|
| committer | Duncan Laurie <dlaurie@chromium.org> | 2016-10-27 16:30:36 +0200 |
| commit | f0ba2259b84c1f5083dab14925351ddf8b245e11 (patch) | |
| tree | bcda19afec97488539f1d52f2c0af936e6ed321b /src/soc/intel/skylake/pmutil.c | |
| parent | 64ce1d122c0464a4ef138fb7452a91b408b1a7c2 (diff) | |
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>
Diffstat (limited to 'src/soc/intel/skylake/pmutil.c')
| -rw-r--r-- | src/soc/intel/skylake/pmutil.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/pmutil.c b/src/soc/intel/skylake/pmutil.c index 904be5c2a0..7d83e9f240 100644 --- a/src/soc/intel/skylake/pmutil.c +++ b/src/soc/intel/skylake/pmutil.c @@ -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); +} |