google/purin: add DMA coherent region
BUG=none
BRANCH=broadcom-firmware
TEST=boot to depthcharge
Change-Id: Id10437c12e219e07121395abd442d53b3b56c7be
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: f33e9218ca8df1d149761c09253c30837b607433
Original-Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Original-Reviewed-on: https://chrome-internal-review.googlesource.com/204757
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Commit-Queue: Daisuke Nojiri <dnojiri@google.com>
Original-Tested-by: Daisuke Nojiri <dnojiri@google.com>
Original-Change-Id: I93def9c326cc8b4fea69078987bddf09d9f2a797
Original-Reviewed-on: https://chromium-review.googlesource.com/256417
Reviewed-on: http://review.coreboot.org/9854
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/src/soc/broadcom/cygnus/romstage.c b/src/soc/broadcom/cygnus/romstage.c
index e581a63..f293f31 100644
--- a/src/soc/broadcom/cygnus/romstage.c
+++ b/src/soc/broadcom/cygnus/romstage.c
@@ -55,9 +55,11 @@
after_dram_time = timestamp_get();
#endif
- mmu_init();
- mmu_config_range(0, 4096, DCACHE_OFF);
- dcache_mmu_enable();
+ /* Now that DRAM is up, add mappings for it and DMA coherency buffer. */
+ mmu_config_range((uintptr_t)_dram/MiB,
+ sdram_size_mb(), DCACHE_WRITEBACK);
+ mmu_config_range((uintptr_t)_dma_coherent/MiB,
+ _dma_coherent_size/MiB, DCACHE_OFF);
cbmem_initialize_empty();