diff options
Diffstat (limited to 'arch/powerpc/cpu/mpc85xx/fdt.c')
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/fdt.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/fdt.c b/arch/powerpc/cpu/mpc85xx/fdt.c index 97d3928..812bb3f 100644 --- a/arch/powerpc/cpu/mpc85xx/fdt.c +++ b/arch/powerpc/cpu/mpc85xx/fdt.c @@ -33,6 +33,7 @@ #ifdef CONFIG_FSL_ESDHC #include <fsl_esdhc.h> #endif +#include "../../../../drivers/qe/qe.h" /* For struct qe_firmware */ DECLARE_GLOBAL_DATA_PTR; @@ -406,6 +407,126 @@ static void ft_fixup_qe_snum(void *blob) } #endif +/** + * 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. + */ +#ifdef CONFIG_SYS_DPAA_FMAN +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 = getenv("fman_ucode"); + if (!p) + return; + + fmanfw = (struct qe_firmware *) simple_strtoul(p, NULL, 0); + if (!fmanfw) + return; + + hdr = &fmanfw->header; + length = be32_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_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 = be32_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; + } + + /* Increase the size of the fdt to make room for the node. */ + rc = fdt_increase_size(blob, fmanfw->header.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_alloc_phandle(blob); + rc = fdt_setprop_cell(blob, fwnode, "linux,phandle", phandle); + if (rc < 0) { + 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, fmanfw->header.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. */ + while ((fmnode = fdt_node_offset_by_compatible(blob, fmnode, "fsl,fman")) > 0) { + 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; + } + } +} +#else +#define fdt_fixup_fman_firmware(x) +#endif + void ft_cpu_setup(void *blob, bd_t *bd) { int off; @@ -445,6 +566,8 @@ void ft_cpu_setup(void *blob, bd_t *bd) ft_fixup_qe_snum(blob); #endif + fdt_fixup_fman_firmware(blob); + #ifdef CONFIG_SYS_NS16550 do_fixup_by_compat_u32(blob, "ns16550", "clock-frequency", CONFIG_SYS_NS16550_CLK, 1); |