pcengines/apu2: add board support
Initial work based on db-ft3b-ls and code released by Eltan. Board
boots with some limitation.
Now the AGESA binary is harcoded and board specific until it's fixed
by the SoC vendor.
memtest86+ from external repo skips looking for SPD on SMBus, which when
performed cause memtest86+ to hang. Still didn't tried whole test suit.
SeaBIOS 1.9.3 have some problems with USB which lead to no booting in
some cases. Full log:
https://gist.github.com/pietrushnic/787cbf63f610ff4f6b4ac13e5c20b872
SeaBIOS from PC Engines repository (https://github.com/pcengines/seabios)
works fine. Those changes are planned for upstream.
Information about obtaining and booting Voyage Linux:
https://github.com/pcengines/apu2-documentation#building-firmware-using-apu2-image-builder
Change-Id: Id23e448e27f4bba47b7e9e7fa7679e2690c6e4bc
Signed-off-by: Piotr Król <piotr.krol@3mdeb.com>
Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org>
Reviewed-on: https://review.coreboot.org/14138
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
diff --git a/src/southbridge/amd/pi/hudson/early_setup.c b/src/southbridge/amd/pi/hudson/early_setup.c
index 29809f1..553add9 100644
--- a/src/southbridge/amd/pi/hudson/early_setup.c
+++ b/src/southbridge/amd/pi/hudson/early_setup.c
@@ -25,12 +25,12 @@
#include <cbmem.h>
#include "hudson.h"
#include "pci_devs.h"
+#include <Fch/Fch.h>
#if IS_ENABLED(CONFIG_HUDSON_UART)
#include <cpu/x86/msr.h>
#include <delay.h>
-#include <Fch/Fch.h>
void configure_hudson_uart(void)
{
@@ -174,4 +174,20 @@
return nvram_pos;
}
+void hudson_clk_output_48Mhz(void)
+{
+ u32 data, *memptr;
+
+ /*
+ * Enable the X14M_25M_48M_OSC pin and leaving it at it's default so
+ * 48Mhz will be on ball AP13 (FT3b package)
+ */
+ memptr = (u32 *)(ACPI_MMIO_BASE + MISC_BASE + FCH_MISC_REG40 );
+ data = *memptr;
+
+ /* clear the OSCOUT1_ClkOutputEnb to enable the 48 Mhz clock */
+ data &= (u32)~(1<<2);
+ *memptr = data;
+}
+
#endif