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ppc4xx: Add initial fdt support to 4xx (first needed on 405EX)
Signed-off-by: Stefan Roese <sr@denx.de>
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Stefan Roese
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a424a8bb29
commit
4f14ed6230
1 changed files with 171 additions and 0 deletions
171
cpu/ppc4xx/fdt.c
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171
cpu/ppc4xx/fdt.c
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/*
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* (C) Copyright 2007
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* Stefan Roese, DENX Software Engineering, sr@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/* define DEBUG for debugging output (obviously ;-)) */
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#if 0
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#define DEBUG
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#endif
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#include <common.h>
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#include <watchdog.h>
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#include <command.h>
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#include <asm/cache.h>
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#include <ppc4xx.h>
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#if defined(CONFIG_OF_LIBFDT)
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#include <libfdt.h>
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#include <libfdt_env.h>
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static void do_fixup(void *fdt, const char *node, const char *prop,
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const void *val, int len, int create)
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{
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#if defined(DEBUG)
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int i;
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debug("Updating property '%s/%s' = ", node, prop);
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for (i = 0; i < len; i++)
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debug(" %.2x", *(u8*)(val+i));
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debug("\n");
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#endif
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int rc = fdt_find_and_setprop(fdt, node, prop, val, len, create);
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if (rc)
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printf("Unable to update property %s:%s, err=%s\n",
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node, prop, fdt_strerror(rc));
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}
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static void do_fixup_macaddr(void *fdt, int offset, const void *val, int i)
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{
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int rc;
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debug("Updating node EMAC%d\n", i);
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rc = fdt_setprop(fdt, offset, "mac-address", val, 6);
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if (rc)
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printf("Unable to update property %s, err=%s\n",
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"mac-address", fdt_strerror(rc));
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rc = fdt_setprop(fdt, offset, "local-mac-address", val, 6);
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if (rc)
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printf("Unable to update property %s, err=%s\n",
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"local-mac-address", fdt_strerror(rc));
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}
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static void do_fixup_u32(void *fdt, const char *node, const char *prop,
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u32 val, int create)
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{
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val = cpu_to_fdt32(val);
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do_fixup(fdt, node, prop, &val, sizeof(val), create);
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}
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static void do_fixup_uart(void *fdt, int offset, int i, bd_t *bd)
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{
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int rc;
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u32 val;
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debug("Updating node UART%d\n", i);
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val = cpu_to_fdt32(CFG_EXT_SERIAL_CLOCK);
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rc = fdt_setprop(fdt, offset, "clock-frequency", &val, 4);
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if (rc)
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printf("Unable to update node UART, err=%s\n", fdt_strerror(rc));
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val = cpu_to_fdt32(bd->bi_baudrate);
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rc = fdt_setprop(fdt, offset, "current-speed", &val, 4);
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if (rc)
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printf("Unable to update node UART, err=%s\n", fdt_strerror(rc));
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}
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void ft_cpu_setup(void *blob, bd_t *bd)
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{
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char * cpu_path = "/cpus/" OF_CPU;
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sys_info_t sys_info;
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int offset;
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int i;
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int tmp[2];
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get_sys_info (&sys_info);
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do_fixup_u32(blob, cpu_path, "timebase-frequency", bd->bi_intfreq, 1);
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do_fixup_u32(blob, cpu_path, "clock-frequency", bd->bi_intfreq, 1);
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do_fixup_u32(blob, "/plb", "clock-frequency", sys_info.freqPLB, 1);
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do_fixup_u32(blob, "/plb/opb", "clock-frequency", sys_info.freqOPB, 1);
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do_fixup_u32(blob, "/plb/opb/ebc", "clock-frequency", sys_info.freqEBC, 1);
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/* update, or add and update /memory node */
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offset = fdt_find_node_by_path(blob, "/memory");
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if (offset < 0) {
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offset = fdt_add_subnode(blob, 0, "memory");
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if (offset < 0)
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debug("failed to add /memory node: %s\n",
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fdt_strerror(offset));
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}
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if (offset >= 0) {
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fdt_setprop(blob, offset, "device_type",
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"memory", sizeof("memory"));
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tmp[0] = cpu_to_fdt32(bd->bi_memstart);
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tmp[1] = cpu_to_fdt32(bd->bi_memsize);
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fdt_setprop(blob, offset, "reg", tmp, sizeof(tmp));
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}
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/*
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* Setup all baudrates for the UARTs
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*/
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offset = 0;
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for (i = 0; i < 4; i++) {
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offset = fdt_find_node_by_type(blob, offset, "serial");
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if (offset < 0)
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break;
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do_fixup_uart(blob, offset, i, bd);
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}
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/*
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* Setup all MAC addresses in fdt
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*/
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offset = 0;
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for (i = 0; i < 4; i++) {
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offset = fdt_find_node_by_type(blob, offset, "network");
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if (offset < 0)
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break;
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switch (i) {
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case 0:
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do_fixup_macaddr(blob, offset, bd->bi_enetaddr, 0);
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break;
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#ifdef CONFIG_HAS_ETH1
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case 1:
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do_fixup_macaddr(blob, offset, bd->bi_enet1addr, 1);
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break;
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#endif
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#ifdef CONFIG_HAS_ETH2
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case 2:
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do_fixup_macaddr(blob, offset, bd->bi_enet2addr, 2);
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break;
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#endif
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#ifdef CONFIG_HAS_ETH3
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case 3:
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do_fixup_macaddr(blob, offset, bd->bi_enet3addr, 3);
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break;
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#endif
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}
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}
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}
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#endif /* CONFIG_OF_LIBFDT */
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