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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (c) 2010-2016, NVIDIA CORPORATION.
- */
- #include <common.h>
- #include <fdtdec.h>
- #include <stdlib.h>
- #include <asm/arch-tegra/cboot.h>
- #include <asm/arch-tegra/gpu.h>
- /*
- * This function is called right before the kernel is booted. "blob" is the
- * device tree that will be passed to the kernel.
- */
- int ft_system_setup(void *blob, struct bd_info *bd)
- {
- const char *gpu_compats[] = {
- #if defined(CONFIG_TEGRA124)
- "nvidia,gk20a",
- #endif
- #if defined(CONFIG_TEGRA210)
- "nvidia,gm20b",
- #endif
- };
- int i, ret;
- /* Enable GPU node if GPU setup has been performed */
- for (i = 0; i < ARRAY_SIZE(gpu_compats); i++) {
- ret = tegra_gpu_enable_node(blob, gpu_compats[i]);
- if (ret)
- return ret;
- }
- 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)
- {
- const char *names = "memory-region-names";
- struct fdt_memory carveout;
- unsigned int index = 0;
- int err, offset, len;
- const void *prop;
- 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);
- else
- break;
- 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++;
- }
- offset = fdt_path_offset(src, node);
- if (offset < 0) {
- debug("failed to find source offset for %s: %s\n", node,
- fdt_strerror(err));
- return err;
- }
- prop = fdt_getprop(src, offset, names, &len);
- if (prop) {
- offset = fdt_path_offset(dst, node);
- if (offset < 0) {
- debug("failed to find destination offset for %s: %s\n",
- node, fdt_strerror(err));
- return err;
- }
- err = fdt_setprop(dst, offset, "memory-region-names", prop,
- len);
- if (err < 0) {
- debug("failed to copy \"%s\" property: %s\n", names,
- fdt_strerror(err));
- return err;
- }
- }
- 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
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