diff options
Diffstat (limited to 'src/mainboard/google/snow/mainboard.c')
| -rw-r--r-- | src/mainboard/google/snow/mainboard.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/mainboard/google/snow/mainboard.c b/src/mainboard/google/snow/mainboard.c index d209a762fc..dfaf81d537 100644 --- a/src/mainboard/google/snow/mainboard.c +++ b/src/mainboard/google/snow/mainboard.c @@ -46,6 +46,10 @@ #define DRAM_SIZE CONFIG_DRAM_SIZE_MB #define DRAM_END (DRAM_START + DRAM_SIZE) /* plus one... */ +/* Arbitrary range of DMA memory for depthcharge's drivers */ +#define DMA_START (0x77300000) +#define DMA_SIZE (0x00100000) + static struct edid edid = { .ha = 1366, .va = 768, @@ -320,6 +324,7 @@ static void mainboard_enable(device_t dev) mmu_init(); mmu_config_range(0, DRAM_START, DCACHE_OFF); mmu_config_range(DRAM_START, DRAM_SIZE, DCACHE_WRITEBACK); + mmu_config_range(DMA_START >> 20, DMA_SIZE >> 20, DCACHE_OFF); mmu_config_range(DRAM_END, 4096 - DRAM_END, DCACHE_OFF); dcache_invalidate_all(); dcache_mmu_enable(); @@ -342,3 +347,14 @@ struct chip_operations mainboard_ops = { .name = "Samsung/Google ARM Chromebook", .enable_dev = mainboard_enable, }; + +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 = (intptr_t)DMA_START; + dma->range_size = DMA_SIZE; +} |