diff options
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/apollolake/Kconfig | 5 | ||||
| -rw-r--r-- | src/soc/intel/apollolake/Makefile.inc | 4 | ||||
| -rw-r--r-- | src/soc/intel/apollolake/chip.h | 4 | ||||
| -rw-r--r-- | src/soc/intel/apollolake/gspi.c | 73 | ||||
| -rw-r--r-- | src/soc/intel/apollolake/include/soc/iomap.h | 1 |
5 files changed, 87 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/Kconfig b/src/soc/intel/apollolake/Kconfig index 97297738a9..affa7edc7f 100644 --- a/src/soc/intel/apollolake/Kconfig +++ b/src/soc/intel/apollolake/Kconfig @@ -9,6 +9,7 @@ config SOC_INTEL_GLK select SOC_INTEL_APOLLOLAKE select SOC_INTEL_COMMON_BLOCK_CPU_MPINIT select SOC_INTEL_COMMON_BLOCK_SGX + select SOC_INTEL_COMMON_BLOCK_GSPI_VERSION_2 help Intel GLK support @@ -374,4 +375,8 @@ config SOC_ESPI help Use eSPI bus instead of LPC +config SOC_INTEL_COMMON_BLOCK_GSPI_MAX + int + default 3 + endif diff --git a/src/soc/intel/apollolake/Makefile.inc b/src/soc/intel/apollolake/Makefile.inc index 68f294743b..65df55900d 100644 --- a/src/soc/intel/apollolake/Makefile.inc +++ b/src/soc/intel/apollolake/Makefile.inc @@ -11,6 +11,7 @@ subdirs-y += ../../../cpu/x86/cache bootblock-y += bootblock/bootblock.c bootblock-y += car.c bootblock-y += heci.c +bootblock-y += gspi.c bootblock-y += i2c.c bootblock-y += lpc.c bootblock-y += mmap_boot.c @@ -21,6 +22,7 @@ bootblock-$(CONFIG_FSP_CAR) += bootblock/cache_as_ram_fsp.S romstage-y += car.c romstage-$(CONFIG_PLATFORM_USES_FSP2_0) += romstage.c +romstage-y += gspi.c romstage-y += heci.c romstage-y += i2c.c romstage-$(CONFIG_SOC_UART_DEBUG) += uart.c @@ -48,6 +50,7 @@ ramstage-y += chip.c ramstage-y += cse.c ramstage-y += elog.c ramstage-y += graphics.c +ramstage-y += gspi.c ramstage-y += heci.c ramstage-y += i2c.c ramstage-y += lpc.c @@ -73,6 +76,7 @@ postcar-$(CONFIG_FSP_CAR) += exit_car_fsp.S verstage-y += car.c verstage-y += i2c.c +verstage-y += gspi.c verstage-y += heci.c verstage-y += memmap.c verstage-y += mmap_boot.c diff --git a/src/soc/intel/apollolake/chip.h b/src/soc/intel/apollolake/chip.h index f354538aa4..63ced94cd5 100644 --- a/src/soc/intel/apollolake/chip.h +++ b/src/soc/intel/apollolake/chip.h @@ -20,6 +20,7 @@ #define _SOC_APOLLOLAKE_CHIP_H_ #include <commonlib/helpers.h> +#include <intelblocks/gspi.h> #include <soc/gpe.h> #include <soc/gpio.h> #include <intelblocks/lpc_lib.h> @@ -39,6 +40,9 @@ enum pnp_settings { }; struct soc_intel_apollolake_config { + /* GSPI */ + struct gspi_cfg gspi[CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI_MAX]; + /* * Mapping from PCIe root port to CLKREQ input on the SOC. The SOC has * four CLKREQ inputs, but six root ports. Root ports without an diff --git a/src/soc/intel/apollolake/gspi.c b/src/soc/intel/apollolake/gspi.c new file mode 100644 index 0000000000..6d5f8e59dc --- /dev/null +++ b/src/soc/intel/apollolake/gspi.c @@ -0,0 +1,73 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2018 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <console/console.h> +#include <device/device.h> +#include <intelblocks/gspi.h> +#include <intelblocks/spi.h> +#include <soc/iomap.h> +#include <soc/pci_devs.h> +#include "chip.h" + +const struct gspi_cfg *gspi_get_soc_cfg(void) +{ + DEVTREE_CONST struct soc_intel_apollolake_config *config; + int devfn = SA_DEVFN_ROOT; + DEVTREE_CONST struct device *dev = dev_find_slot(0, devfn); + + if (!dev || !dev->chip_info) { + printk(BIOS_ERR, "%s: Could not find SoC devicetree config!\n", + __func__); + return NULL; + } + + config = dev->chip_info; + + return &config->gspi[0]; +} + +uintptr_t gspi_get_soc_early_base(void) +{ + return EARLY_GSPI_BASE_ADDRESS; +} + +/* + * SPI Bus 0 is Fast SPI and GSPI starts from SPI bus # 1 onwards. Thus, adjust + * the bus # accordingly when referring to SPI / GSPI bus numbers. + */ +#define GSPI_TO_SPI_BUS(x) (x) +#define SPI_TO_GSPI_BUS(x) ((x) - 1) + +int gspi_soc_spi_to_gspi_bus(unsigned int spi_bus, unsigned int *gspi_bus) +{ + if (spi_bus == 0) + return -1; + + if (SPI_TO_GSPI_BUS(spi_bus) >= CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI_MAX) + return -1; + + *gspi_bus = SPI_TO_GSPI_BUS(spi_bus); + + return 0; +} + +int gspi_soc_bus_to_devfn(unsigned int gspi_bus) +{ + if (gspi_bus >= CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI_MAX) + return -1; + + return spi_soc_bus_to_devfn(GSPI_TO_SPI_BUS(gspi_bus)); +} diff --git a/src/soc/intel/apollolake/include/soc/iomap.h b/src/soc/intel/apollolake/include/soc/iomap.h index d4cd0952e8..7e6a795c58 100644 --- a/src/soc/intel/apollolake/include/soc/iomap.h +++ b/src/soc/intel/apollolake/include/soc/iomap.h @@ -48,6 +48,7 @@ /* Temporary BAR for SPI until PCI enumeration assigns a BAR in ramstage. */ #define PRERAM_SPI_BASE_ADDRESS 0xfe010000 +#define EARLY_GSPI_BASE_ADDRESS 0xfe011000 /* Temporary BAR for early I2C bus access */ #define PRERAM_I2C_BASE_ADDRESS(x) (0xfe020000 + (0x1000 * (x))) |