New patch to review for coreboot: x4x: make preallocated IGD memory a cmos option

[Arthur Heymans]

Arthur Heymans ([e-mail]) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/15492

-gerrit

commit c94e51ae02e859e700be6640eea74791f1a5f2bd
Author: Arthur Heymans 
Date:   Sat Jun 18 21:52:30 2016 +0200

x4x: make preallocated IGD memory a cmos option

This allows to set the preallocated memory for the IGD on x4x
    using a cmos option.
    If no cmos option is found a default value of 64M is used.

Change-Id: I9051d080be82f6dfab37d353252e29b2ed1fca7f
    Signed-off-by: Arthur Heymans 
---
 src/northbridge/intel/x4x/early_init.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/northbridge/intel/x4x/early_init.c b/src/northbridge/intel/x4x/early_init.c
index b522293..a430538 100644
--- a/src/northbridge/intel/x4x/early_init.c
+++ b/src/northbridge/intel/x4x/early_init.c
@@ -18,6 +18,7 @@
 #include <arch/io.h>
 #include "iomap.h"
 #include <southbridge/intel/i82801gx/i82801gx.h> /* DEFAULT_PMBASE */
+#include <pc80/mc146818rtc.h>
 #include "x4x.h"

void x4x_early_init(void)
@@ -51,5 +52,12 @@ void x4x_early_init(void)

/* Enable internal GFX */
    pci_write_config32(d0f0, D0F0_DEVEN, BOARD_DEVEN);
-	pci_write_config16(d0f0, D0F0_GGC, 0x0170);
+	/* Set preallocated IGD size from cmos */
+	u8 gfxsize;
+
+	if (get_option(&gfxsize, "gfx_uma_size") != CB_SUCCESS) {
+		/* 6 for 64MB, default if not set in cmos */
+		gfxsize = 6;
+	}
+	pci_write_config16(d0f0, D0F0_GGC, 0x0100 | ((gfxsize + 1) << 4));
 }