diff options
| author | Martin Roth <martin.roth@se-eng.com> | 2014-12-14 14:12:11 -0700 |
|---|---|---|
| committer | Martin Roth <gaumless@gmail.com> | 2014-12-17 17:04:43 +0100 |
| commit | 9aadeb56cac0bbb6a7bcbeeffeaf60ed291ece7f (patch) | |
| tree | 61b6d89dd374bd9d8474643e97911474588ea2ce /src/mainboard/intel | |
| parent | 52669ef31b5a7d813ec82e3c53171e8c47844dce (diff) | |
| download | coreboot-9aadeb56cac0bbb6a7bcbeeffeaf60ed291ece7f.tar.xz | |
intel/minnowmax: Determine board type from GPIOs
SSUS GPIO 5 reflects the Minnowboard Max SKU:
--- GPIO 5 low is a 1GB board
--- GPIO 5 high is a 2GB (or 4GB in the future) board.
This allows us to determine the board type at runtime and configure
the FSP appropriately.
Change-Id: I9f75df5413d23d63280b601457ea9a1ff020d717
Signed-off-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-on: http://review.coreboot.org/7797
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/mainboard/intel')
| -rw-r--r-- | src/mainboard/intel/minnowmax/Kconfig | 14 | ||||
| -rw-r--r-- | src/mainboard/intel/minnowmax/gpio.c | 2 | ||||
| -rw-r--r-- | src/mainboard/intel/minnowmax/romstage.c | 19 |
3 files changed, 15 insertions, 20 deletions
diff --git a/src/mainboard/intel/minnowmax/Kconfig b/src/mainboard/intel/minnowmax/Kconfig index 1a940b23a5..dfe4174afe 100644 --- a/src/mainboard/intel/minnowmax/Kconfig +++ b/src/mainboard/intel/minnowmax/Kconfig @@ -44,19 +44,7 @@ config LOCK_MANAGEMENT_ENGINE config MAINBOARD_PART_NUMBER string - default "Minnow Max 2GB" if MINNOWMAX_2GB_SKU - default "Minnow Max 1GB" - -choice - prompt "Memory SKU to build" - default MINNOWMAX_2GB_SKU - -config MINNOWMAX_1GB_SKU - bool "1GB" - -config MINNOWMAX_2GB_SKU - bool "2GB" -endchoice + default "Minnow Max" config MAX_CPUS int diff --git a/src/mainboard/intel/minnowmax/gpio.c b/src/mainboard/intel/minnowmax/gpio.c index 9b735cf24d..defaf17bbf 100644 --- a/src/mainboard/intel/minnowmax/gpio.c +++ b/src/mainboard/intel/minnowmax/gpio.c @@ -179,7 +179,7 @@ static const struct soc_gpio_map gpssus_gpio_map[] = { GPIO_FUNC(0, PULL_UP, 20K), /* GPIO_S5[02] - SOC_GPIO_S5_2 */ GPIO_FUNC6, /* GPIO_S5[03] - mPCIE_WAKEB */ GPIO_NC, /* GPIO_S5[04] - No Connect */ - GPIO_INPUT, /* GPIO_S5[05] - BOM_OP1 */ + GPIO_INPUT, /* GPIO_S5[05] - BOM_OP1 - Memory: 0=1GB 1=2GB or 4GB*/ GPIO_INPUT, /* GPIO_S5[06] - BOM_OP2 */ GPIO_INPUT, /* GPIO_S5[07] - BOM_OP3 */ GPIO_OUT_HIGH, /* GPIO_S5[08] - SOC_USB_HOST_EN0 */ diff --git a/src/mainboard/intel/minnowmax/romstage.c b/src/mainboard/intel/minnowmax/romstage.c index a14472297a..d8fd04ae99 100644 --- a/src/mainboard/intel/minnowmax/romstage.c +++ b/src/mainboard/intel/minnowmax/romstage.c @@ -23,6 +23,7 @@ #include <drivers/intel/fsp/fsp_util.h> #include <pc80/mc146818rtc.h> #include <console/console.h> +#include <baytrail/gpio.h> #include "chip.h" /** @@ -57,17 +58,23 @@ void romstage_fsp_rt_buffer_callback(FSP_INIT_RT_BUFFER *FspRtBuffer) { UPD_DATA_REGION *UpdData = FspRtBuffer->Common.UpdDataRgnPtr; u8 use_xhci = UpdData->PcdEnableXhci; + u8 gpio5 = 0; /* - * Minnow Max Board : 1GB SKU uses 2Gb density memory - * 2GB SKU uses 4Gb densiry memory + * Minnow Max Board + * Read SSUS gpio 5 to determine memory type + * 0 : 1GB SKU uses 2Gb density memory + * 1 : 2GB SKU uses 4Gb density memory * - * devicetree.cb assume 1GB SKU board - */ - if (CONFIG_MINNOWMAX_2GB_SKU) + * devicetree.cb assumes 1GB SKU board + */ + configure_ssus_gpio(5, PAD_FUNC0 | PAD_PULL_DISABLE, PAD_VAL_INPUT); + gpio5 = read_ssus_gpio(5); + if (gpio5) UpdData->PcdMemoryParameters.DIMMDensity += (DIMM_DENSITY_4G_BIT - DIMM_DENSITY_2G_BIT); - + printk(BIOS_NOTICE, "%s GB Minnowboard Max detected.\n", + gpio5 ? "2 / 4" : "1" ); /* Update XHCI UPD value if required */ get_option(&use_xhci, "use_xhci_over_ehci"); if ((use_xhci < 2) && (use_xhci != UpdData->PcdEnableXhci)) { |