ARM: tegra: Refactor DT update helpers
Rather than duplicate the Ethernet MAC address and carveout updating
code for each board, move it to a common location and make it more
reusable.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/arch/arm/include/asm/arch-tegra/board.h b/arch/arm/include/asm/arch-tegra/board.h
index 24d0db8..cd4d0ee 100644
--- a/arch/arm/include/asm/arch-tegra/board.h
+++ b/arch/arm/include/asm/arch-tegra/board.h
@@ -30,4 +30,14 @@
void pin_mux_mmc(void); /* overridable mmc pinmux setup */
void pin_mux_display(void); /* overridable DISPLAY pinmux setup */
+/*
+ * Helpers for various standard DT update mechanisms.
+ */
+
+#if defined(CONFIG_ARM64)
+void ft_mac_address_setup(void *fdt);
+void ft_carveout_setup(void *fdt, const char *const *nodes,
+ unsigned int count);
+#endif
+
#endif
diff --git a/arch/arm/mach-tegra/dt-setup.c b/arch/arm/mach-tegra/dt-setup.c
index 602b20e..894a635 100644
--- a/arch/arm/mach-tegra/dt-setup.c
+++ b/arch/arm/mach-tegra/dt-setup.c
@@ -4,6 +4,9 @@
*/
#include <common.h>
+#include <fdtdec.h>
+#include <stdlib.h>
+#include <asm/arch-tegra/cboot.h>
#include <asm/arch-tegra/gpu.h>
/*
@@ -31,3 +34,118 @@
return 0;
}
+
+#if defined(CONFIG_ARM64)
+void ft_mac_address_setup(void *fdt)
+{
+ const void *cboot_fdt = (const void *)cboot_boot_x0;
+ uint8_t mac[ETH_ALEN], local_mac[ETH_ALEN];
+ const char *path;
+ int offset, err;
+
+ err = cboot_get_ethaddr(cboot_fdt, local_mac);
+ if (err < 0)
+ memset(local_mac, 0, ETH_ALEN);
+
+ path = fdt_get_alias(fdt, "ethernet");
+ if (!path)
+ return;
+
+ debug("ethernet alias found: %s\n", path);
+
+ offset = fdt_path_offset(fdt, path);
+ if (offset < 0) {
+ printf("ethernet alias points to absent node %s\n", path);
+ return;
+ }
+
+ if (is_valid_ethaddr(local_mac)) {
+ err = fdt_setprop(fdt, offset, "local-mac-address", local_mac,
+ ETH_ALEN);
+ if (!err)
+ debug("Local MAC address set: %pM\n", local_mac);
+ }
+
+ if (eth_env_get_enetaddr("ethaddr", mac)) {
+ if (memcmp(local_mac, mac, ETH_ALEN) != 0) {
+ err = fdt_setprop(fdt, offset, "mac-address", mac,
+ ETH_ALEN);
+ if (!err)
+ debug("MAC address set: %pM\n", mac);
+ }
+ }
+}
+
+static int ft_copy_carveout(void *dst, const void *src, const char *node)
+{
+ struct fdt_memory carveout;
+ unsigned int index = 0;
+ int err;
+
+ while (true) {
+ const char **compatibles = NULL;
+ unsigned int num_compatibles;
+ unsigned long flags;
+ char *copy = NULL;
+ const char *name;
+
+ err = fdtdec_get_carveout(src, node, "memory-region", index,
+ &carveout, &name, &compatibles,
+ &num_compatibles, &flags);
+ if (err < 0) {
+ if (err != -FDT_ERR_NOTFOUND)
+ printf("failed to get carveout for %s: %d\n",
+ node, err);
+
+ return err;
+ }
+
+ if (name) {
+ const char *ptr = strchr(name, '@');
+
+ if (ptr) {
+ copy = strndup(name, ptr - name);
+ name = copy;
+ }
+ } else {
+ name = "carveout";
+ }
+
+ err = fdtdec_set_carveout(dst, node, "memory-region", index,
+ &carveout, name, compatibles,
+ num_compatibles, flags);
+ if (err < 0) {
+ printf("failed to set carveout for %s: %d\n", node,
+ err);
+ return err;
+ }
+
+ if (copy)
+ free(copy);
+
+ index++;
+ }
+
+ return 0;
+}
+
+void ft_carveout_setup(void *fdt, const char * const *nodes, unsigned int count)
+{
+ const void *cboot_fdt = (const void *)cboot_boot_x0;
+ unsigned int i;
+ int err;
+
+ for (i = 0; i < count; i++) {
+ printf("copying carveout for %s...\n", nodes[i]);
+
+ err = ft_copy_carveout(fdt, cboot_fdt, nodes[i]);
+ if (err < 0) {
+ if (err != -FDT_ERR_NOTFOUND)
+ printf("failed to copy carveout for %s: %d\n",
+ nodes[i], err);
+
+ continue;
+ }
+ }
+}
+#endif