nb/intel/haswell/gma.c: Drop unused `set_translation_table` function
Change-Id: I6c65a5a74a83b8da299245fd6f4a7ae7c1ed30c3
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46692
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/northbridge/intel/haswell/gma.c b/src/northbridge/intel/haswell/gma.c
index 989d100..9627945 100644
--- a/src/northbridge/intel/haswell/gma.c
+++ b/src/northbridge/intel/haswell/gma.c
@@ -120,47 +120,6 @@
return new_vendev;
}
-/** FIXME: Seems to be outdated. */
-/*
- * GTT is the Global Translation Table for the graphics pipeline. It is used to translate
- * graphics addresses to physical memory addresses. As in the CPU, GTTs map 4K pages.
- *
- * The setgtt function adds a further bit of flexibility: it allows you to set a range (the
- * first two parameters) to point to a physical address (third parameter); the physical address
- * is incremented by a count (fourth parameter) for each GTT in the range.
- *
- * Why do it this way? For ultrafast startup, we can point all the GTT entries to point to one
- * page, and set that page to 0s:
- *
- * memset(physbase, 0, 4096);
- * setgtt(0, 4250, physbase, 0);
- *
- * this takes about 2 ms, and is a win because zeroing the page takes up to 200 ms.
- *
- * This call sets the GTT to point to a linear range of pages starting at physbase.
- */
-
-#define GTT_PTE_BASE (2 << 20)
-
-void set_translation_table(int start, int end, u64 base, int inc)
-{
- int i;
-
- for (i = start; i < end; i++){
- u64 physical_address = base + i * inc;
-
- /* swizzle the 32:39 bits to 4:11 */
- u32 word = physical_address | ((physical_address >> 28) & 0xff0) | 1;
-
- /*
- * Note: we've confirmed by checking the values that MRC does no useful
- * setup before we run this.
- */
- gtt_write(GTT_PTE_BASE + i * 4, word);
- gtt_read(GTT_PTE_BASE + i * 4);
- }
-}
-
static struct resource *gtt_res = NULL;
u32 gtt_read(u32 reg)
diff --git a/src/northbridge/intel/haswell/haswell.h b/src/northbridge/intel/haswell/haswell.h
index b160f83..edca2b6 100644
--- a/src/northbridge/intel/haswell/haswell.h
+++ b/src/northbridge/intel/haswell/haswell.h
@@ -90,7 +90,6 @@
void haswell_early_initialization(void);
void haswell_late_initialization(void);
-void set_translation_table(int start, int end, u64 base, int inc);
void haswell_unhide_peg(void);
void report_platform_info(void);