New patch to review for coreboot: mediatek/mt8173: mmu: update mmu range before DRAM is initialized.

[Patrick Georgi]

Patrick Georgi ([e-mail]) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/13987

-gerrit

commit b5415626f0b1bec632a3988a59bf52f539349a6e
Author: Yidi Lin 
Date:   Mon Jan 18 11:06:19 2016 +0800

mediatek/mt8173: mmu: update mmu range before DRAM is initialized.

The DRAM size can not be determined before DRAM is initialized. Since
    mt8173 only support 2GB and 4GB DRAM models. We map 0x0 to the end of
    2GB DRAM address before DRAM is initialized.

BRANCH=none
    BUG=none
    TEST=boot to kernel

Change-Id: I27a00106b0aa91c3dacfcd2bcd9208f08b108dc5
    Signed-off-by: Patrick Georgi 
    Original-Commit-Id: 9720e67c86f0d37a08f7c32e900996c75d60288a
    Original-Change-Id: I87d9c6ac11486decde102b7821f550c2f1a51f1c
    Original-Signed-off-by: Yidi Lin 
    Original-Reviewed-on: https://chromium-review.googlesource.com/327960
    Original-Reviewed-by: Julius Werner 
    Original-Reviewed-on: https://chromium-review.googlesource.com/331175
    Original-Commit-Ready: Patrick Georgi 
    Original-Tested-by: Patrick Georgi 
---
 src/soc/mediatek/mt8173/mmu_operations.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/soc/mediatek/mt8173/mmu_operations.c b/src/soc/mediatek/mt8173/mmu_operations.c
index a70fe2c..744248a 100644
--- a/src/soc/mediatek/mt8173/mmu_operations.c
+++ b/src/soc/mediatek/mt8173/mmu_operations.c
@@ -30,8 +30,8 @@ void mt8173_mmu_init(void)
 {
    mmu_init();

-	/* Set 0x0 to end of dram as device memory */
-	mmu_config_range((void *)0, (uintptr_t)_dram + dram_size, DEV_MEM);
+	/* Set 0x0 to the end of 2GB dram address as device memory */
+	mmu_config_range((void *)0, (uintptr_t)_dram + 2U * GiB, DEV_MEM);

/* SRAM is cached */
    mmu_config_range(_sram_l2c, _sram_l2c_size + _sram_size, CACHED_MEM);
@@ -47,7 +47,7 @@ void mt8173_mmu_init(void)

void mt8173_mmu_after_dram(void)
 {
-	/* Remap DRAM as cached now that it's up and running */
+	/* Map DRAM as cached now that it's up and running */
    mmu_config_range(_dram, dram_size, CACHED_MEM);

/* Unmap L2C SRAM so it can be reclaimed by L2 cache */