[PATCH] arm: socfpga: soc64: Add support for board_boot_order()
Jit Loon Lim
jit.loon.lim at intel.com
Sun Dec 11 14:24:19 CET 2022
From: Sin Hui Kho <sin.hui.kho at intel.com>
Add board_boot_order() to retrieve the list of boot devices from
spl-boot-order property in device tree. This board_boot_order()
will use for all Intel SOC64 device for single SPL binary.
Signed-off-by: Sin Hui Kho <sin.hui.kho at intel.com>
Signed-off-by: Jit Loon Lim <jit.loon.lim at intel.com>
---
arch/arm/mach-socfpga/spl_soc64.c | 93 +++++++++++++++++++++++++++++++
1 file changed, 93 insertions(+)
diff --git a/arch/arm/mach-socfpga/spl_soc64.c b/arch/arm/mach-socfpga/spl_soc64.c
index ba6efc1d86..2b2377da69 100644
--- a/arch/arm/mach-socfpga/spl_soc64.c
+++ b/arch/arm/mach-socfpga/spl_soc64.c
@@ -23,3 +23,96 @@ u32 spl_boot_mode(const u32 boot_device)
return MMCSD_MODE_RAW;
}
#endif
+
+/* This function is to map specified node onto SPL boot devices */
+static int spl_node_to_boot_device(int node)
+{
+ struct udevice *parent;
+
+ if (!uclass_get_device_by_of_offset(UCLASS_MMC, node, &parent))
+ return BOOT_DEVICE_MMC1;
+ else if (!uclass_get_device_by_of_offset(UCLASS_SPI_FLASH, node, &parent))
+ return BOOT_DEVICE_SPI;
+ else if (!uclass_get_device_by_of_offset(UCLASS_MTD, node, &parent))
+ return BOOT_DEVICE_NAND;
+ else
+ return -1;
+}
+
+static void default_spl_boot_list(u32 *spl_boot_list, int length)
+{
+ spl_boot_list[0] = BOOT_DEVICE_MMC1;
+
+ if (length > 1)
+ spl_boot_list[1] = BOOT_DEVICE_SPI;
+
+ if (length > 2)
+ spl_boot_list[2] = BOOT_DEVICE_NAND;
+}
+
+void board_boot_order(u32 *spl_boot_list)
+{
+ int idx = 0;
+ const void *blob = gd->fdt_blob;
+ int chosen_node = fdt_path_offset(blob, "/chosen");
+ const char *conf;
+ int elem;
+ int boot_device;
+ int node;
+ int length;
+
+ /* expect valid initialized spl_boot_list */
+ if (!spl_boot_list)
+ return;
+
+ length = 1;
+ while (spl_boot_list[length] == spl_boot_list[length - 1])
+ length++;
+
+ debug("%s: chosen_node is %d\n", __func__, chosen_node);
+ if (chosen_node < 0) {
+ printf("%s: /chosen not found, using default\n", __func__);
+ default_spl_boot_list(spl_boot_list, length);
+ return;
+ }
+
+ for (elem = 0;
+ (conf = fdt_stringlist_get(blob, chosen_node,
+ "u-boot,spl-boot-order", elem, NULL));
+ elem++) {
+ if (idx >= length) {
+ printf("%s: limit %d to spl_boot_list exceeded\n", __func__,
+ length);
+ break;
+ }
+
+ /* Resolve conf item as a path in device tree */
+ node = fdt_path_offset(blob, conf);
+ if (node < 0) {
+ debug("%s: could not find %s in FDT\n", __func__, conf);
+ continue;
+ }
+
+ /* Try to map spl node back onto SPL boot devices */
+ boot_device = spl_node_to_boot_device(node);
+ if (boot_device < 0) {
+ debug("%s: could not map node @%x to a boot-device\n",
+ __func__, node);
+ continue;
+ }
+
+ spl_boot_list[idx] = boot_device;
+ debug("%s: spl_boot_list[%d] = %u\n", __func__, idx,
+ spl_boot_list[idx]);
+ idx++;
+ }
+
+ if (idx == 0) {
+ if (!conf && !elem) {
+ printf("%s: spl-boot-order invalid, using default\n", __func__);
+ default_spl_boot_list(spl_boot_list, length);
+ } else {
+ printf("%s: no valid element spl-boot-order list\n", __func__);
+ }
+ }
+}
\ No newline at end of file
--
2.26.2
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