[coreboot-gerrit] Change in coreboot[master]: nb/intel/i945: Enable and allocate 8M for TSEG

[Arthur Heymans (Code Review)]

Arthur Heymans has uploaded this change for review. ( https://review.coreboot.org/25592

Change subject: nb/intel/i945: Enable and allocate 8M for TSEG
......................................................................

nb/intel/i945: Enable and allocate 8M for TSEG

TSEG can be used as a stage cache and SMM can be relocated here.

Change-Id: I0da5a00c98c4c4fb309b2691dc1d4645eb35b4fd
Signed-off-by: Arthur Heymans 
---
M src/northbridge/intel/i945/early_init.c
1 file changed, 5 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/92/25592/1

diff --git a/src/northbridge/intel/i945/early_init.c b/src/northbridge/intel/i945/early_init.c
index bf486a0..7de2c73 100644
--- a/src/northbridge/intel/i945/early_init.c
+++ b/src/northbridge/intel/i945/early_init.c
@@ -192,6 +192,11 @@
    	gfxsize = 2;
    pci_write_config16(PCI_DEV(0, 0x00, 0), GGC, ((gfxsize + 1) << 4));

+	reg8 = pci_read_config8(PCI_DEV(0, 0, 0), ESMRAMC);
+	reg8 &= ~0x7;
+	reg8 |= (2 << 1) | (1 << 0); /* 8M and TSEG_Enable */
+	pci_write_config8(PCI_DEV(0, 0, 0), ESMRAMC, reg8);
+
    /* Set C0000-FFFFF to access RAM on both reads and writes */
    pci_write_config8(PCI_DEV(0, 0x00, 0), PAM0, 0x30);
    pci_write_config8(PCI_DEV(0, 0x00, 0), PAM1, 0x33);