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Diffstat (limited to 'Documentation/soc/amd/family17h.md')
| -rwxr-xr-x | Documentation/soc/amd/family17h.md | 41 |
1 files changed, 3 insertions, 38 deletions
diff --git a/Documentation/soc/amd/family17h.md b/Documentation/soc/amd/family17h.md index 23088cd12bab..fffe25b02355 100755 --- a/Documentation/soc/amd/family17h.md +++ b/Documentation/soc/amd/family17h.md @@ -240,47 +240,12 @@ in an Integration Guide. ## APCB setup APCBs are used to provide the PSP with SPD information and optionally a set of -GPIOs to use for selecting which SPD to load. - -### Prebuilt -The picasso `Makefile` expects APCBs to be located in -`3rdparty/blobs/mainboard/$(MAINBOARDDIR)`. If you have a pre-built binary just -add the following to your mainboard's Makefile. - -``` -# i.e., 3rdparty/blobs/mainboard/amd/mandolin/APCB_mandolin.bin -APCB_SOURCES = mandolin -``` +GPIOs to use for selecting which SPD to load. A list of APCB files should be +specified in `APCB_SOURCES`. ### Generating APCBs If you have a template APCB file, the `apcb_edit` tool can be used to inject the -SPD and GPIOs used to select the correct slot. Entries should match this -pattern `{NAME}_x{1,2}`. There should be a matching SPD hex file in -`SPD_SOURCES_DIR` matching the pattern `{NAME}.spd.hex`. -The `_x{1,2}` suffix denotes single or dual channel. Up to 16 slots can be used. -If a slot is empty, the special empty keyword can be used. This will generate -an APCB with an empty SPD. - -``` -APCB_SOURCES = hynix-HMA851S6CJR6N-VK_x1 # 0b0000 -APCB_SOURCES += hynix-HMAA1GS6CMR6N-VK_x2 # 0b0001 -APCB_SOURCES += empty # 0b0010 -APCB_SOURCES += samsung-K4A8G165WC-BCWE_x1 # 0b0011 -``` - -#### APCB Board ID GPIO configuration. -The GPIOs determine which memory SPD will be used during boot. -``` -# APCB_BOARD_ID_GPIO[0-3] = GPIO_NUMBER GPIO_IO_MUX GPIO_BANK_CTL -# GPIO_NUMBER: FCH GPIO number -# GPIO_IO_MUX: Value write to IOMUX to configure this GPIO -# GPIO_BANK_CTL: Value write to GPIOBankCtl[23:16] to configure this GPIO - -APCB_BOARD_ID_GPIO0 = 121 1 0 -APCB_BOARD_ID_GPIO1 = 120 1 0 -APCB_BOARD_ID_GPIO2 = 131 3 0 -APCB_BOARD_ID_GPIO3 = 116 1 0 -``` +SPD and GPIOs used to select the correct slot. ## Footnotes |