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/* SPDX-License-Identifier: GPL-2.0-or-later */
#define __SIMPLE_DEVICE__
#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>
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_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_DNV_SPI,
0
};
static const struct pci_driver pch_spi __pci_driver = {
.ops = &spi_dev_ops,
.vendor = PCI_VID_INTEL,
.devices = pci_device_ids,
};
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