| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| |
| #define __SIMPLE_DEVICE__ |
| |
| #include <assert.h> |
| #include <commonlib/bsd/helpers.h> |
| #include <device/device.h> |
| #include <device/mmio.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <device/pci_ops.h> |
| #include <device/spi.h> |
| #include <intelblocks/fast_spi.h> |
| #include <intelblocks/gspi.h> |
| #include <intelblocks/spi.h> |
| #include <soc/pci_devs.h> |
| #include <spi-generic.h> |
| #include <types.h> |
| |
| const struct spi_ctrlr_buses spi_ctrlr_bus_map[] = { |
| { .ctrlr = &fast_spi_flash_ctrlr, .bus_start = 0, .bus_end = 0 }, |
| #if !ENV_SMM && CONFIG(SOC_INTEL_COMMON_BLOCK_GSPI) |
| { .ctrlr = &gspi_ctrlr, .bus_start = 1, |
| .bus_end = 1 + (CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI_MAX - 1)}, |
| #endif |
| }; |
| |
| const size_t spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map); |
| |
| #define MMIO_BIOS_GPR0 0x98 |
| |
| union spi_bios_gpr0 { |
| struct { |
| /* Specified write protection is enabled */ |
| /* |
| * This field corresponds to flash address bits 26:12 |
| * and specifies the lower limit of protected range. |
| */ |
| uint32_t protect_range_base:15; |
| |
| /* Specifies read protection is enabled */ |
| uint32_t read_protect_en:1; |
| |
| /* |
| * This field corresponds to flash address bits 26:12 |
| * and specifies the upper limit of the protected range |
| */ |
| uint32_t protect_range_limit:15; |
| |
| uint32_t write_protect_en:1; |
| } __packed fields; |
| |
| uint32_t data; |
| }; |
| |
| /* Read SPI BAR 0 from PCI configuration space */ |
| static uintptr_t get_spi_bar(pci_devfn_t dev) |
| { |
| uintptr_t bar; |
| |
| bar = pci_read_config32(dev, PCI_BASE_ADDRESS_0); |
| assert(bar != 0); |
| /* |
| * Bits 31-12 are the base address as per EDS for SPI, |
| * Don't care about 0-11 bit |
| */ |
| return bar & ~PCI_BASE_ADDRESS_MEM_ATTR_MASK; |
| } |
| |
| static uint32_t spi_read_bar(pci_devfn_t dev, uint32_t offset) |
| { |
| return read32p(get_spi_bar(dev) + offset); |
| } |
| |
| static uint32_t spi_read_bios_gpr0(void) |
| { |
| return spi_read_bar(PCH_DEV_SPI, MMIO_BIOS_GPR0); |
| } |
| |
| static uint32_t spi_get_wp_cse_ro_start_offset(union spi_bios_gpr0 bios_gpr0) |
| { |
| return bios_gpr0.fields.protect_range_base << 12; |
| } |
| |
| static uint32_t spi_get_wp_cse_ro_limit(union spi_bios_gpr0 bios_gpr0) |
| { |
| return bios_gpr0.fields.protect_range_limit << 12 | 0xfff; |
| } |
| |
| bool is_spi_wp_cse_ro_en(void) |
| { |
| union spi_bios_gpr0 bios_gpr0; |
| |
| bios_gpr0.data = spi_read_bios_gpr0(); |
| return !!bios_gpr0.fields.write_protect_en; |
| } |
| |
| void spi_get_wp_cse_ro_range(uint32_t *base, uint32_t *limit) |
| { |
| union spi_bios_gpr0 bios_gpr0; |
| |
| bios_gpr0.data = spi_read_bios_gpr0(); |
| *base = spi_get_wp_cse_ro_start_offset(bios_gpr0); |
| *limit = spi_get_wp_cse_ro_limit(bios_gpr0); |
| } |
| |
| static int spi_dev_to_bus(struct device *dev) |
| { |
| return spi_soc_devfn_to_bus(dev->path.pci.devfn); |
| } |
| |
| static struct spi_bus_operations spi_bus_ops = { |
| .dev_to_bus = &spi_dev_to_bus, |
| }; |
| |
| struct device_operations spi_dev_ops = { |
| .read_resources = pci_dev_read_resources, |
| .set_resources = pci_dev_set_resources, |
| .enable_resources = pci_dev_enable_resources, |
| .scan_bus = scan_generic_bus, |
| .ops_spi_bus = &spi_bus_ops, |
| .ops_pci = &pci_dev_ops_pci, |
| }; |
| |
| static const unsigned short pci_device_ids[] = { |
| PCI_DID_INTEL_LNL_GSPI0, |
| PCI_DID_INTEL_LNL_GSPI1, |
| PCI_DID_INTEL_LNL_GSPI2, |
| PCI_DID_INTEL_MTL_GSPI0, |
| PCI_DID_INTEL_MTL_GSPI1, |
| PCI_DID_INTEL_MTL_GSPI2, |
| PCI_DID_INTEL_APL_SPI0, |
| PCI_DID_INTEL_APL_SPI1, |
| PCI_DID_INTEL_APL_SPI2, |
| PCI_DID_INTEL_GLK_SPI0, |
| PCI_DID_INTEL_GLK_SPI1, |
| PCI_DID_INTEL_GLK_SPI2, |
| PCI_DID_INTEL_CNL_SPI0, |
| PCI_DID_INTEL_CNL_SPI1, |
| PCI_DID_INTEL_CNL_SPI2, |
| PCI_DID_INTEL_CNP_H_SPI0, |
| PCI_DID_INTEL_CNP_H_SPI1, |
| PCI_DID_INTEL_CNP_H_SPI2, |
| PCI_DID_INTEL_ICP_SPI0, |
| PCI_DID_INTEL_ICP_SPI1, |
| PCI_DID_INTEL_ICP_SPI2, |
| PCI_DID_INTEL_CMP_SPI0, |
| PCI_DID_INTEL_CMP_SPI1, |
| PCI_DID_INTEL_CMP_SPI2, |
| PCI_DID_INTEL_CMP_H_SPI0, |
| PCI_DID_INTEL_CMP_H_SPI1, |
| PCI_DID_INTEL_CMP_H_SPI2, |
| PCI_DID_INTEL_TGP_GSPI0, |
| PCI_DID_INTEL_TGP_GSPI1, |
| PCI_DID_INTEL_TGP_GSPI2, |
| PCI_DID_INTEL_TGP_GSPI3, |
| PCI_DID_INTEL_TGP_GSPI4, |
| PCI_DID_INTEL_TGP_GSPI5, |
| PCI_DID_INTEL_TGP_GSPI6, |
| PCI_DID_INTEL_TGP_H_SPI0, |
| PCI_DID_INTEL_TGP_H_GSPI0, |
| PCI_DID_INTEL_TGP_H_GSPI1, |
| PCI_DID_INTEL_TGP_H_GSPI2, |
| PCI_DID_INTEL_TGP_H_GSPI3, |
| PCI_DID_INTEL_MCC_GSPI0, |
| PCI_DID_INTEL_MCC_GSPI1, |
| PCI_DID_INTEL_MCC_GSPI2, |
| PCI_DID_INTEL_JSP_SPI0, |
| PCI_DID_INTEL_JSP_SPI1, |
| PCI_DID_INTEL_JSP_SPI2, |
| PCI_DID_INTEL_ADP_P_SPI0, |
| PCI_DID_INTEL_ADP_P_SPI1, |
| PCI_DID_INTEL_ADP_P_SPI2, |
| PCI_DID_INTEL_ADP_P_SPI3, |
| PCI_DID_INTEL_ADP_P_SPI4, |
| PCI_DID_INTEL_ADP_P_SPI5, |
| PCI_DID_INTEL_ADP_P_SPI6, |
| PCI_DID_INTEL_ADP_S_SPI0, |
| PCI_DID_INTEL_ADP_S_SPI1, |
| PCI_DID_INTEL_ADP_S_SPI2, |
| PCI_DID_INTEL_ADP_S_SPI3, |
| PCI_DID_INTEL_ADP_S_SPI4, |
| PCI_DID_INTEL_ADP_S_SPI5, |
| PCI_DID_INTEL_ADP_S_SPI6, |
| PCI_DID_INTEL_ADP_M_N_SPI0, |
| PCI_DID_INTEL_ADP_M_N_SPI1, |
| PCI_DID_INTEL_ADP_M_SPI2, |
| PCI_DID_INTEL_RPP_S_SPI0, |
| PCI_DID_INTEL_RPP_S_SPI1, |
| PCI_DID_INTEL_RPP_S_SPI2, |
| PCI_DID_INTEL_RPP_S_SPI3, |
| PCI_DID_INTEL_DNV_SPI, |
| 0 |
| }; |
| |
| static const struct pci_driver pch_spi __pci_driver = { |
| .ops = &spi_dev_ops, |
| .vendor = PCI_VID_INTEL, |
| .devices = pci_device_ids, |
| }; |