src/soc/intel/common/block/fast_spi/Makefile.mk

   1 ## SPDX-License-Identifier: GPL-2.0-only
   2 bootblock-$(CONFIG_SOC_INTEL_COMMON_BLOCK_FAST_SPI) += fast_spi.c
   3 bootblock-$(CONFIG_SOC_INTEL_COMMON_BLOCK_FAST_SPI) += fast_spi_flash.c
   4
   5 verstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_FAST_SPI) += fast_spi.c
   6 verstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_FAST_SPI) += fast_spi_flash.c
   7
   8 romstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_FAST_SPI) += fast_spi.c
   9 romstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_FAST_SPI) += fast_spi_flash.c
  10
  11 ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_FAST_SPI) += fast_spi.c
  12 ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_FAST_SPI) += fast_spi_flash.c
  13
  14 postcar-$(CONFIG_SOC_INTEL_COMMON_BLOCK_FAST_SPI) += fast_spi.c
  15 postcar-$(CONFIG_SOC_INTEL_COMMON_BLOCK_FAST_SPI) += fast_spi_flash.c
  16
  17 smm-$(CONFIG_SOC_INTEL_COMMON_BLOCK_FAST_SPI) += fast_spi.c
  18 ifeq ($(CONFIG_SPI_FLASH_SMM),y)
  19 smm-$(CONFIG_SOC_INTEL_COMMON_BLOCK_FAST_SPI) += fast_spi_flash.c
  20 endif
  21
  22 CPPFLAGS_common += -I$(src)/soc/intel/common/block/fast_spi
  23
  24 ifeq ($(CONFIG_FAST_SPI_SUPPORTS_EXT_BIOS_WINDOW),y)
  25
  26 # mmap_boot.c provides a custom boot media device for the platforms that support
  27 # additional window for BIOS regions greater than 16MiB. This is used instead of
  28 # the default boot media device in arch/x86/mmap_boot.c
  29 bootblock-y += mmap_boot.c
  30 verstage-y += mmap_boot.c
  31 romstage-y += mmap_boot.c
  32 postcar-y += mmap_boot.c
  33 ramstage-y += mmap_boot.c
  34 smm-y += mmap_boot.c
  35
  36 # When using extended BIOS window, no sub-region within the BIOS region must
  37 # cross 16MiB boundary from the end of the BIOS region. This is because the
  38 # top 16MiB of the BIOS region are decoded by the standard window from
  39 # (4G - 16M) to 4G. There is no standard section name that identifies the BIOS
  40 # region in flashmap. This check assumes that BIOS region is placed at the top
  41 # of SPI flash and hence calculates the boundary as flash_size - 16M. If any
  42 # region within the SPI flash crosses this boundary, then the check complains
  43 # and exits.
  44
  45 $(call add_intermediate, check-fmap-16mib-crossing, $(obj)/fmap_config.h)
  46         fmap_get() { awk "/$$1/ { print \$$NF }" < $<; };               \
  47                                                                         \
  48         flash_offset=$$(fmap_get FMAP_SECTION_FLASH_START);             \
  49         flash_size=$$(fmap_get FMAP_SECTION_FLASH_SIZE);                \
  50         if [ $$((flash_size)) -le $$((0x1000000)) ]; then               \
  51            exit;                                                        \
  52         fi;                                                             \
  53         bios_16M_boundary=$$((flash_size-0x1000000));                   \
  54         for x in $$(grep "FMAP_TERMINAL_SECTIONS" < $< | cut -d\" -f2); \
  55         do                                                              \
  56             start=$$(fmap_get "FMAP_SECTION_$${x}_START");              \
  57             size=$$(fmap_get "FMAP_SECTION_$${x}_SIZE");                \
  58             start=$$((start-flash_offset));                             \
  59             end=$$((start+size-1));                                     \
  60             if [ $$((start)) -lt $$((bios_16M_boundary)) ] &&           \
  61                         [ $$((end)) -ge $$((bios_16M_boundary)) ];      \
  62             then                                                        \
  63                 echo "ERROR: $$x crosses 16MiB boundary";               \
  64                 fail=1;                                                 \
  65                 break;                                                  \
  66             fi;                                                         \
  67         done;                                                           \
  68         exit $$fail
  69
  70 # If the platform supports extended window and the SPI flash size is greater
  71 # than 16MiB, then create a mapping for the extended window as well.
  72 # The assumptions here are:
  73 # 1. Top 16MiB is still decoded in the fixed decode window just below 4G
  74 # boundary.
  75 # 2. Rest of the SPI flash below the top 16MiB is mapped at the top of extended
  76 # window. Even though the platform might support a larger extended window, the
  77 # SPI flash part used by the mainboard might not be large enough to be mapped
  78 # in the entire window. In such cases, the mapping is assumed to be in the top
  79 # part of the extended window with the bottom part remaining unused.
  80 #
  81 # Example:
  82 # ext_win_base = 0xF8000000
  83 # ext_win_size = 32 # MiB
  84 # ext_win_limit = ext_win_base + ext_win_size - 1 = 0xF9FFFFFF
  85 #
  86 # If SPI flash is 32MiB, then top 16MiB is mapped from 0xFF000000 - 0xFFFFFFFF
  87 # whereas the bottom 16MiB is mapped from 0xF9000000 - 0xF9FFFFFF. The extended
  88 # window 0xF8000000 - 0xF8FFFFFF remains unused.
  89 #
  90
  91 ifeq ($(call int-gt, $(CONFIG_ROM_SIZE) 0x1000000), 1)
  92 DEFAULT_WINDOW_SIZE=0x1000000
  93 DEFAULT_WINDOW_FLASH_BASE=$(call int-subtract, $(CONFIG_ROM_SIZE) $(DEFAULT_WINDOW_SIZE))
  94 DEFAULT_WINDOW_MMIO_BASE=0xff000000
  95 EXT_WINDOW_FLASH_BASE=0
  96 EXT_WINDOW_SIZE=$(DEFAULT_WINDOW_FLASH_BASE)
  97 EXT_WINDOW_MMIO_BASE=$(call int-subtract, $(call int-add, $(CONFIG_EXT_BIOS_WIN_BASE) $(CONFIG_EXT_BIOS_WIN_SIZE)) \
  98         $(EXT_WINDOW_SIZE))
  99 CBFSTOOL_ADD_CMD_OPTIONS += --mmap $(DEFAULT_WINDOW_FLASH_BASE):$(DEFAULT_WINDOW_MMIO_BASE):$(DEFAULT_WINDOW_SIZE)
 100 CBFSTOOL_ADD_CMD_OPTIONS += --mmap $(EXT_WINDOW_FLASH_BASE):$(EXT_WINDOW_MMIO_BASE):$(EXT_WINDOW_SIZE)
 101 endif
 102
 103
 104 endif # CONFIG_FAST_SPI_SUPPORTS_EXT_BIOS_WINDOW