diff options
Diffstat (limited to 'cpu')
| -rw-r--r-- | cpu/ppc4xx/fdt.c | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/cpu/ppc4xx/fdt.c b/cpu/ppc4xx/fdt.c new file mode 100644 index 0000000..a1c81e6 --- /dev/null +++ b/cpu/ppc4xx/fdt.c @@ -0,0 +1,171 @@ +/* + * (C) Copyright 2007 + * Stefan Roese, DENX Software Engineering, sr@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/* define DEBUG for debugging output (obviously ;-)) */ +#if 0 +#define DEBUG +#endif + +#include <common.h> +#include <watchdog.h> +#include <command.h> +#include <asm/cache.h> +#include <ppc4xx.h> + +#if defined(CONFIG_OF_LIBFDT) +#include <libfdt.h> +#include <libfdt_env.h> + +static void do_fixup(void *fdt, const char *node, const char *prop, + const void *val, int len, int create) +{ +#if defined(DEBUG) + int i; + debug("Updating property '%s/%s' = ", node, prop); + for (i = 0; i < len; i++) + debug(" %.2x", *(u8*)(val+i)); + debug("\n"); +#endif + int rc = fdt_find_and_setprop(fdt, node, prop, val, len, create); + if (rc) + printf("Unable to update property %s:%s, err=%s\n", + node, prop, fdt_strerror(rc)); +} + +static void do_fixup_macaddr(void *fdt, int offset, const void *val, int i) +{ + int rc; + + debug("Updating node EMAC%d\n", i); + + rc = fdt_setprop(fdt, offset, "mac-address", val, 6); + if (rc) + printf("Unable to update property %s, err=%s\n", + "mac-address", fdt_strerror(rc)); + rc = fdt_setprop(fdt, offset, "local-mac-address", val, 6); + if (rc) + printf("Unable to update property %s, err=%s\n", + "local-mac-address", fdt_strerror(rc)); +} + +static void do_fixup_u32(void *fdt, const char *node, const char *prop, + u32 val, int create) +{ + val = cpu_to_fdt32(val); + do_fixup(fdt, node, prop, &val, sizeof(val), create); +} + +static void do_fixup_uart(void *fdt, int offset, int i, bd_t *bd) +{ + int rc; + u32 val; + + debug("Updating node UART%d\n", i); + + val = cpu_to_fdt32(CFG_EXT_SERIAL_CLOCK); + rc = fdt_setprop(fdt, offset, "clock-frequency", &val, 4); + if (rc) + printf("Unable to update node UART, err=%s\n", fdt_strerror(rc)); + + val = cpu_to_fdt32(bd->bi_baudrate); + rc = fdt_setprop(fdt, offset, "current-speed", &val, 4); + if (rc) + printf("Unable to update node UART, err=%s\n", fdt_strerror(rc)); +} + +void ft_cpu_setup(void *blob, bd_t *bd) +{ + char * cpu_path = "/cpus/" OF_CPU; + sys_info_t sys_info; + int offset; + int i; + int tmp[2]; + + get_sys_info (&sys_info); + + do_fixup_u32(blob, cpu_path, "timebase-frequency", bd->bi_intfreq, 1); + do_fixup_u32(blob, cpu_path, "clock-frequency", bd->bi_intfreq, 1); + do_fixup_u32(blob, "/plb", "clock-frequency", sys_info.freqPLB, 1); + do_fixup_u32(blob, "/plb/opb", "clock-frequency", sys_info.freqOPB, 1); + do_fixup_u32(blob, "/plb/opb/ebc", "clock-frequency", sys_info.freqEBC, 1); + + /* update, or add and update /memory node */ + offset = fdt_find_node_by_path(blob, "/memory"); + if (offset < 0) { + offset = fdt_add_subnode(blob, 0, "memory"); + if (offset < 0) + debug("failed to add /memory node: %s\n", + fdt_strerror(offset)); + } + if (offset >= 0) { + fdt_setprop(blob, offset, "device_type", + "memory", sizeof("memory")); + tmp[0] = cpu_to_fdt32(bd->bi_memstart); + tmp[1] = cpu_to_fdt32(bd->bi_memsize); + fdt_setprop(blob, offset, "reg", tmp, sizeof(tmp)); + } + + /* + * Setup all baudrates for the UARTs + */ + offset = 0; + for (i = 0; i < 4; i++) { + offset = fdt_find_node_by_type(blob, offset, "serial"); + if (offset < 0) + break; + + do_fixup_uart(blob, offset, i, bd); + } + + /* + * Setup all MAC addresses in fdt + */ + offset = 0; + for (i = 0; i < 4; i++) { + offset = fdt_find_node_by_type(blob, offset, "network"); + if (offset < 0) + break; + + switch (i) { + case 0: + do_fixup_macaddr(blob, offset, bd->bi_enetaddr, 0); + break; +#ifdef CONFIG_HAS_ETH1 + case 1: + do_fixup_macaddr(blob, offset, bd->bi_enet1addr, 1); + break; +#endif +#ifdef CONFIG_HAS_ETH2 + case 2: + do_fixup_macaddr(blob, offset, bd->bi_enet2addr, 2); + break; +#endif +#ifdef CONFIG_HAS_ETH3 + case 3: + do_fixup_macaddr(blob, offset, bd->bi_enet3addr, 3); + break; +#endif + } + } +} +#endif /* CONFIG_OF_LIBFDT */ |