x86: spi: Add a way to access the SPI mapping via registers

[thirdparty/u-boot.git] / arch / x86 / include / asm / fast_spi.h

diff --git a/arch/x86/include/asm/fast_spi.h b/arch/x86/include/asm/fast_spi.h
index 47c1da80d770a2668592cb28d93e46f0f942a93e..7a81d4f05c66632e0a276d22d0b24942f1ae5f35 100644 (file)
--- a/arch/x86/include/asm/fast_spi.h
+++ b/arch/x86/include/asm/fast_spi.h
@@ -64,6 +64,25 @@ check_member(fast_spi_regs, ptdata, 0xd0);
 int fast_spi_get_bios_mmap(pci_dev_t pdev, ulong *map_basep, uint *map_sizep,
                           uint *offsetp);
 
+/**
+ * fast_spi_get_bios_mmap_regs() - Get memory map for SPI flash given regs
+ *
+ * @regs:      SPI registers to use
+ * @map_basep: Returns base memory address for mapped SPI
+ * @map_sizep: Returns size of mapped SPI
+ * @offsetp:   Returns start offset of SPI flash where the map works
+ *     correctly (offsets before this are not visible)
+ * @return 0 (always)
+ */
+int fast_spi_get_bios_mmap_regs(struct fast_spi_regs *regs, ulong *map_basep,
+                               uint *map_sizep, uint *offsetp);
+
+/**
+ * fast_spi_early_init() - Set up a BAR to use SPI early in U-Boot
+ *
+ * @pdev:      PCI device to use (this is the Fast SPI device)
+ * @mmio_base: MMIO base to use to access registers
+ */
 int fast_spi_early_init(pci_dev_t pdev, ulong mmio_base);
 
 #endif /* ASM_FAST_SPI_H */