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i945: Fix TSEG size allocation for get_top_of_ram() 

Seems boards with i945 had TSEG disabled so this had gone unnoticed.

Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Change-Id: I6a00ea9121847ce2fede22538e1b53a870d761f1
Reviewed-on: http://review.coreboot.org/5892
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
This commit is contained in:
Kyösti Mälkki 2014-05-31 16:36:29 +03:00
parent 15935ebe24
commit fd2501b3f1
1 changed files with 4 additions and 4 deletions
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8
src/northbridge/intel/i945/ram_calc.c
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@ -36,18 +36,18 @@ unsigned long get_top_of_ram(void)
}
/* if TSEG enabled subtract size */
switch(pci_read_config8(PCI_DEV(0, 0, 0), ESMRAM)) {
switch(pci_read_config8(PCI_DEV(0, 0, 0), ESMRAM) & 0x07) {
case 0x01:
/* 1MB TSEG */
tom -= 0x10000;
tom -= 0x100000;
break;
case 0x03:
/* 2MB TSEG */
tom -= 0x20000;
tom -= 0x200000;
break;
case 0x05:
/* 8MB TSEG */
tom -= 0x80000;
tom -= 0x800000;
break;
default:
/* TSEG either disabled or invalid */