diff options
Diffstat (limited to 'src/mainboard/google/pit/mainboard.c')
| -rw-r--r-- | src/mainboard/google/pit/mainboard.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/mainboard/google/pit/mainboard.c b/src/mainboard/google/pit/mainboard.c index 77c54a189f..467b9d04e9 100644 --- a/src/mainboard/google/pit/mainboard.c +++ b/src/mainboard/google/pit/mainboard.c @@ -45,6 +45,10 @@ #define DRAM_START (CONFIG_SYS_SDRAM_BASE >> 20) #define DRAM_SIZE CONFIG_DRAM_SIZE_MB +/* 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, @@ -452,6 +456,7 @@ static void mainboard_enable(device_t dev) /* set up caching for the DRAM */ mmu_config_range(DRAM_START, DRAM_SIZE, DCACHE_WRITEBACK); + mmu_config_range(DMA_START >> 20, DMA_SIZE >> 20, DCACHE_OFF); tlb_invalidate_all(); /* this is going to move, but we must have it now and we're @@ -472,3 +477,14 @@ 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; +} |