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authorFurquan Shaikh <furquan@google.com>2014-08-12 17:20:42 -0700
committerPatrick Georgi <pgeorgi@google.com>2015-03-26 00:27:10 +0100
commit1fb6c01688d2728317f6a533302e51ef6c9c5fd1 (patch)
tree8c220880ad23699b79bcfb3f2b05e2405f48e78c /src/mainboard/google/rush
parent2296774af67f2fd728c662d5120e29b849b4d685 (diff)
downloadcoreboot-1fb6c01688d2728317f6a533302e51ef6c9c5fd1.tar.xz
rush: support for DMA region
Currently rush needs a DMA region in order to communicate with USB devices. Therefore, add that region to the memory map. BUG=chrome-os-partner:31293 BRANCH=None TEST=With the changes for adding non-cacheable memory range and adding DMA region, booting from USB reaches same point as MMC. Change-Id: I82d97840fad8cc96bf958c6efa13d2fdc1233d79 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: b182651a1b6db1a7adbf315b6865467590a0785c Original-Change-Id: I6a465eaa77e0d5ab4d5fb22161e88e7a5fd9c4a8 Original-Signed-off-by: Furquan Shaikh <furquan@google.com> Original-Reviewed-on: https://chromium-review.googlesource.com/212193 Original-Tested-by: Furquan Shaikh <furquan@chromium.org> Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/8928 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/mainboard/google/rush')
-rw-r--r--src/mainboard/google/rush/Kconfig8
-rw-r--r--src/mainboard/google/rush/mainboard.c21
2 files changed, 29 insertions, 0 deletions
diff --git a/src/mainboard/google/rush/Kconfig b/src/mainboard/google/rush/Kconfig
index eaae86ce8c..f723a6c10d 100644
--- a/src/mainboard/google/rush/Kconfig
+++ b/src/mainboard/google/rush/Kconfig
@@ -95,4 +95,12 @@ config EC_GOOGLE_CHROMEEC_SPI_BUS
hex
default 1
+config DRAM_DMA_START
+ hex
+ default 0xc0000000
+
+config DRAM_DMA_SIZE
+ hex
+ default 0x00200000
+
endif # BOARD_GOOGLE_RUSH
diff --git a/src/mainboard/google/rush/mainboard.c b/src/mainboard/google/rush/mainboard.c
index c4b0b441c4..35417f07ce 100644
--- a/src/mainboard/google/rush/mainboard.c
+++ b/src/mainboard/google/rush/mainboard.c
@@ -17,9 +17,11 @@
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <arch/mmu.h>
#include <device/device.h>
#include <boot/coreboot_tables.h>
+#include <memrange.h>
#include <soc/clock.h>
#include <soc/nvidia/tegra132/clk_rst.h>
#include <soc/nvidia/tegra132/spi.h>
@@ -86,3 +88,22 @@ struct chip_operations mainboard_ops = {
.name = "rush",
.enable_dev = mainboard_enable,
};
+
+
+void mainboard_add_memory_ranges(struct memranges *map)
+{
+ /* Create non-cacheable region for DMA operations. */
+ memranges_insert(map, CONFIG_DRAM_DMA_START, CONFIG_DRAM_DMA_SIZE,
+ MA_MEM | MA_MEM_NC | MA_NS | MA_RW);
+}
+
+void lb_board(struct lb_header *header)
+{
+ struct lb_range *dma;
+
+ dma = (struct lb_range *)lb_new_record(header);
+ dma->tag = LB_TAB_DMA;
+ dma->size = sizeof(*dma);
+ dma->range_start = CONFIG_DRAM_DMA_START;
+ dma->range_size = CONFIG_DRAM_DMA_SIZE;
+}