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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 | // SPDX-License-Identifier: GPL-2.0+ /* * Copyright 2016 Freescale Semiconductor, Inc. */ #include <asm/io.h> #include <env.h> #include <fdt_support.h> #include <fsl_qe.h> /* For struct qe_firmware */ #include <u-boot/crc.h> #ifdef CONFIG_SYS_DPAA_FMAN /** * fdt_fixup_fman_firmware -- insert the Fman firmware into the device tree * * The binding for an Fman firmware node is documented in * Documentation/powerpc/dts-bindings/fsl/dpaa/fman.txt. This node contains * the actual Fman firmware binary data. The operating system is expected to * be able to parse the binary data to determine any attributes it needs. */ void fdt_fixup_fman_firmware(void *blob) { int rc, fmnode, fwnode = -1; uint32_t phandle; struct qe_firmware *fmanfw; const struct qe_header *hdr; unsigned int length; uint32_t crc; const char *p; /* The first Fman we find will contain the actual firmware. */ fmnode = fdt_node_offset_by_compatible(blob, -1, "fsl,fman"); if (fmnode < 0) /* Exit silently if there are no Fman devices */ return; /* If we already have a firmware node, then also exit silently. */ if (fdt_node_offset_by_compatible(blob, -1, "fsl,fman-firmware") > 0) return; /* If the environment variable is not set, then exit silently */ p = env_get("fman_ucode"); if (!p) return; fmanfw = (struct qe_firmware *)hextoul(p, NULL); if (!fmanfw) return; hdr = &fmanfw->header; length = fdt32_to_cpu(hdr->length); /* Verify the firmware. */ if ((hdr->magic[0] != 'Q') || (hdr->magic[1] != 'E') || (hdr->magic[2] != 'F')) { printf("Data at %p is not an Fman firmware\n", fmanfw); return; } if (length > CONFIG_SYS_QE_FMAN_FW_LENGTH) { printf("Fman firmware at %p is too large (size=%u)\n", fmanfw, length); return; } length -= sizeof(u32); /* Subtract the size of the CRC */ crc = fdt32_to_cpu(*(u32 *)((void *)fmanfw + length)); if (crc != crc32_no_comp(0, (void *)fmanfw, length)) { printf("Fman firmware at %p has invalid CRC\n", fmanfw); return; } length += sizeof(u32); /* Increase the size of the fdt to make room for the node. */ rc = fdt_increase_size(blob, length); if (rc < 0) { printf("Unable to make room for Fman firmware: %s\n", fdt_strerror(rc)); return; } /* Create the firmware node. */ fwnode = fdt_add_subnode(blob, fmnode, "fman-firmware"); if (fwnode < 0) { char s[64]; fdt_get_path(blob, fmnode, s, sizeof(s)); printf("Could not add firmware node to %s: %s\n", s, fdt_strerror(fwnode)); return; } rc = fdt_setprop_string(blob, fwnode, "compatible", "fsl,fman-firmware"); if (rc < 0) { char s[64]; fdt_get_path(blob, fwnode, s, sizeof(s)); printf("Could not add compatible property to node %s: %s\n", s, fdt_strerror(rc)); return; } phandle = fdt_create_phandle(blob, fwnode); if (!phandle) { char s[64]; fdt_get_path(blob, fwnode, s, sizeof(s)); printf("Could not add phandle property to node %s: %s\n", s, fdt_strerror(rc)); return; } rc = fdt_setprop(blob, fwnode, "fsl,firmware", fmanfw, length); if (rc < 0) { char s[64]; fdt_get_path(blob, fwnode, s, sizeof(s)); printf("Could not add firmware property to node %s: %s\n", s, fdt_strerror(rc)); return; } /* Find all other Fman nodes and point them to the firmware node. */ fdt_for_each_node_by_compatible(fmnode, blob, fmnode, "fsl,fman") { rc = fdt_setprop_cell(blob, fmnode, "fsl,firmware-phandle", phandle); if (rc < 0) { char s[64]; fdt_get_path(blob, fmnode, s, sizeof(s)); printf("Could not add pointer property to node %s: %s\n", s, fdt_strerror(rc)); return; } } } #endif |