| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #ifndef SOC_INTEL_COMMON_BLOCK_FAST_SPI_H |
| #define SOC_INTEL_COMMON_BLOCK_FAST_SPI_H |
| |
| #include <types.h> |
| |
| /* |
| * Disable the BIOS write protect and Enable Prefetching and Caching. |
| */ |
| void fast_spi_init(void); |
| /* |
| * Minimal set of commands to read WPSR from SPI. |
| * Returns 0 on success, < 0 on failure. |
| */ |
| int fast_spi_flash_read_wpsr(u8 *sr); |
| /* |
| * Set FAST_SPIBAR BIOS Control BILD bit. |
| */ |
| void fast_spi_set_bios_interface_lock_down(void); |
| /* |
| * Set FAST_SPIBAR BIOS Control LE bit. |
| */ |
| void fast_spi_set_lock_enable(void); |
| /* |
| * Set FAST_SPIBAR BIOS Control Ext Bios LE bit. |
| */ |
| void fast_spi_set_ext_bios_lock_enable(void); |
| /* |
| * Set FAST_SPIBAR BIOS Control EISS bit. |
| */ |
| void fast_spi_set_eiss(void); |
| /* |
| * Set FAST_SPI opcode menu. |
| */ |
| void fast_spi_set_opcode_menu(void); |
| /* |
| * Lock FAST_SPIBAR. |
| */ |
| void fast_spi_lock_bar(void); |
| /* |
| * Set FAST_SPIBAR + DLOCK (0x0C) register bits to discrete lock the |
| * FAST_SPI Protected Range (PR) registers. |
| */ |
| void fast_spi_pr_dlock(void); |
| /* |
| * Set FAST_SPIBAR Soft Reset Data Register value. |
| */ |
| void fast_spi_set_strap_msg_data(uint32_t soft_reset_data); |
| /* |
| * Returns bios_start and fills in size of the BIOS region. |
| */ |
| size_t fast_spi_get_bios_region(size_t *bios_size); |
| /* |
| * Cache the memory-mapped BIOS region as write-protect type. In ramstage |
| * this function needs to be called after the final MTRR solution has been |
| * calculated. |
| */ |
| void fast_spi_cache_bios_region(void); |
| /* |
| * Program temporary BAR for FAST_SPI in case any of the stages before ramstage |
| * need to access FAST_SPI MMIO regs. Ramstage will assign a new BAR during PCI |
| * enumeration. Also, Disable the BIOS write protect and Enable Prefetching and |
| * Caching. |
| */ |
| void fast_spi_early_init(uintptr_t spi_base_address); |
| /* |
| * Fast SPI flash controller structure to allow SoCs to define bus-controller |
| * mapping. |
| */ |
| extern const struct spi_ctrlr fast_spi_flash_ctrlr; |
| /* |
| * Read SPI Write protect disable bit. |
| */ |
| bool fast_spi_wpd_status(void); |
| /* |
| * Enable SPI Write protect. |
| */ |
| void fast_spi_enable_wp(void); |
| /* |
| * Get base and size of extended BIOS decode window used at runtime in host address space. If |
| * the BIOS region is not greater than 16MiB, then this function returns 0 for both base and |
| * size. |
| */ |
| void fast_spi_get_ext_bios_window(uintptr_t *base, size_t *size); |
| /* |
| * SOC function to get SPI-DMI Destination Id |
| */ |
| uint32_t soc_get_spi_dmi_destination_id(void); |
| /* |
| * Add MTRR for extended BIOS region(when supported) to postcar frame |
| */ |
| struct postcar_frame; |
| void fast_spi_cache_ext_bios_postcar(struct postcar_frame *pcf); |
| |
| #endif /* SOC_INTEL_COMMON_BLOCK_FAST_SPI_H */ |