Update "dma-ranges" DT property of all PCIe controllers in the system
with the up-to-date DRAM layout. This allows the PCIe controller take
full advantage of all the available DRAM.
Signed-off-by: Marek Vasut <marek.vasut+rene...@gmail.com>
Cc: Nobuhiro Iwamatsu <iwama...@nigauri.org>
---
V2: - Drop support for older kernels
- Mark memory as prefetchable
---
arch/arm/mach-rmobile/Kconfig | 1 +
board/renesas/rcar-common/common.c | 49 ++++++++++++++++++++++++++++++
2 files changed, 50 insertions(+)
diff --git a/arch/arm/mach-rmobile/Kconfig b/arch/arm/mach-rmobile/Kconfig
index aafeb355ef..52ab891425 100644
--- a/arch/arm/mach-rmobile/Kconfig
+++ b/arch/arm/mach-rmobile/Kconfig
@@ -21,6 +21,7 @@ config RCAR_GEN3
imply CMD_GPT
imply CMD_UUID
imply CMD_MMC_SWRITE if MMC
+ imply OF_BOARD_SETUP if PCI
imply SUPPORT_EMMC_RPMB if MMC
imply SPL
imply SPL_BOARD_INIT
diff --git a/board/renesas/rcar-common/common.c
b/board/renesas/rcar-common/common.c
index 292867e496..37f8a46d7e 100644
--- a/board/renesas/rcar-common/common.c
+++ b/board/renesas/rcar-common/common.c
@@ -8,6 +8,8 @@
*/
#include <common.h>
+#include <dm.h>
+#include <dm/uclass-internal.h>
#include <asm/arch/rmobile.h>
#ifdef CONFIG_RCAR_GEN3
@@ -46,4 +48,51 @@ int dram_init_banksize(void)
return 0;
}
+
+#if CONFIG_IS_ENABLED(OF_BOARD_SETUP) && CONFIG_IS_ENABLED(PCI)
+int ft_board_setup(void *blob, bd_t *bd)
+{
+ struct udevice *dev;
+ struct uclass *uc;
+ fdt_addr_t regs_addr;
+ int i, off, ret;
+
+ ret = uclass_get(UCLASS_PCI, &uc);
+ if (ret)
+ return ret;
+
+ uclass_foreach_dev(dev, uc) {
+ struct pci_controller hose = { 0 };
+
+ for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
+ if (hose.region_count == MAX_PCI_REGIONS) {
+ printf("maximum number of regions parsed,
aborting\n");
+ break;
+ }
+
+ if (bd->bi_dram[i].size) {
+
pci_set_region(&hose.regions[hose.region_count++],
+ bd->bi_dram[i].start,
+ bd->bi_dram[i].start,
+ bd->bi_dram[i].size,
+ PCI_REGION_MEM |
+ PCI_REGION_PREFETCH |
+ PCI_REGION_SYS_MEMORY);
+ }
+ }
+
+ regs_addr = devfdt_get_addr_index(dev, 0);
+ off = fdt_node_offset_by_compat_reg(blob,
+ "renesas,pcie-rcar-gen3", regs_addr);
+ if (off < 0) {
+ printf("Failed to find PCIe node@%llx\n", regs_addr);
+ return off;
+ }
+
+ fdt_pci_dma_ranges(blob, off, &hose);
+ }
+
+ return 0;
+}
+#endif
#endif
--
2.20.1
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