Created a new fdt_initrd() to deal with setting the initrd properties in the device tree and fixing up the mem reserve. We can use this both in the choosen node handling and lets us remove some duplicated code when we fixup the initrd info in bootm on PPC. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
598 lines
15 KiB
C
598 lines
15 KiB
C
/*
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* (C) Copyright 2007
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* Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
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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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#include <common.h>
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#include <linux/ctype.h>
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#include <linux/types.h>
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#include <asm/global_data.h>
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#include <fdt.h>
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#include <libfdt.h>
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#include <fdt_support.h>
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#include <exports.h>
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/*
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* Global data (for the gd->bd)
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*/
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DECLARE_GLOBAL_DATA_PTR;
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/**
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* fdt_find_and_setprop: Find a node and set it's property
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*
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* @fdt: ptr to device tree
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* @node: path of node
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* @prop: property name
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* @val: ptr to new value
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* @len: length of new property value
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* @create: flag to create the property if it doesn't exist
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*
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* Convenience function to directly set a property given the path to the node.
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*/
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int fdt_find_and_setprop(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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int nodeoff = fdt_path_offset(fdt, node);
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if (nodeoff < 0)
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return nodeoff;
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if ((!create) && (fdt_get_property(fdt, nodeoff, prop, 0) == NULL))
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return 0; /* create flag not set; so exit quietly */
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return fdt_setprop(fdt, nodeoff, prop, val, len);
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}
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#ifdef CONFIG_OF_STDOUT_VIA_ALIAS
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static int fdt_fixup_stdout(void *fdt, int chosenoff)
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{
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int err = 0;
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#ifdef CONFIG_CONS_INDEX
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int node;
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char sername[9] = { 0 };
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const char *path;
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sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1);
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err = node = fdt_path_offset(fdt, "/aliases");
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if (node >= 0) {
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int len;
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path = fdt_getprop(fdt, node, sername, &len);
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if (path) {
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char *p = malloc(len);
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err = -FDT_ERR_NOSPACE;
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if (p) {
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memcpy(p, path, len);
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err = fdt_setprop(fdt, chosenoff,
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"linux,stdout-path", p, len);
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free(p);
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}
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} else {
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err = len;
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}
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}
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#endif
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if (err < 0)
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printf("WARNING: could not set linux,stdout-path %s.\n",
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fdt_strerror(err));
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return err;
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}
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#endif
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int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end, int force)
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{
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int nodeoffset;
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int err, j, total;
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u32 tmp;
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const char *path;
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uint64_t addr, size;
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/* Find the "chosen" node. */
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nodeoffset = fdt_path_offset (fdt, "/chosen");
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/* If there is no "chosen" node in the blob return */
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if (nodeoffset < 0) {
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printf("fdt_initrd: %s\n", fdt_strerror(nodeoffset));
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return nodeoffset;
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}
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/* just return if initrd_start/end aren't valid */
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if ((initrd_start == 0) || (initrd_end == 0))
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return 0;
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total = fdt_num_mem_rsv(fdt);
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/*
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* Look for an existing entry and update it. If we don't find
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* the entry, we will j be the next available slot.
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*/
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for (j = 0; j < total; j++) {
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err = fdt_get_mem_rsv(fdt, j, &addr, &size);
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if (addr == initrd_start) {
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fdt_del_mem_rsv(fdt, j);
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break;
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}
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}
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err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start + 1);
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if (err < 0) {
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printf("fdt_initrd: %s\n", fdt_strerror(err));
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return err;
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}
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path = fdt_getprop(fdt, nodeoffset, "linux,initrd-start", NULL);
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if ((path == NULL) || force) {
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tmp = __cpu_to_be32(initrd_start);
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err = fdt_setprop(fdt, nodeoffset,
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"linux,initrd-start", &tmp, sizeof(tmp));
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if (err < 0) {
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printf("WARNING: "
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"could not set linux,initrd-start %s.\n",
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fdt_strerror(err));
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return err;
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}
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tmp = __cpu_to_be32(initrd_end);
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err = fdt_setprop(fdt, nodeoffset,
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"linux,initrd-end", &tmp, sizeof(tmp));
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if (err < 0) {
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printf("WARNING: could not set linux,initrd-end %s.\n",
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fdt_strerror(err));
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return err;
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}
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}
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return 0;
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}
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int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end, int force)
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{
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int nodeoffset;
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int err;
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char *str; /* used to set string properties */
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const char *path;
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err = fdt_check_header(fdt);
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if (err < 0) {
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printf("fdt_chosen: %s\n", fdt_strerror(err));
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return err;
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}
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/*
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* Find the "chosen" node.
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*/
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nodeoffset = fdt_path_offset (fdt, "/chosen");
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/*
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* If there is no "chosen" node in the blob, create it.
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*/
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if (nodeoffset < 0) {
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/*
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* Create a new node "/chosen" (offset 0 is root level)
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*/
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nodeoffset = fdt_add_subnode(fdt, 0, "chosen");
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if (nodeoffset < 0) {
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printf("WARNING: could not create /chosen %s.\n",
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fdt_strerror(nodeoffset));
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return nodeoffset;
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}
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}
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/*
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* Create /chosen properites that don't exist in the fdt.
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* If the property exists, update it only if the "force" parameter
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* is true.
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*/
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str = getenv("bootargs");
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if (str != NULL) {
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path = fdt_getprop(fdt, nodeoffset, "bootargs", NULL);
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if ((path == NULL) || force) {
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err = fdt_setprop(fdt, nodeoffset,
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"bootargs", str, strlen(str)+1);
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if (err < 0)
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printf("WARNING: could not set bootargs %s.\n",
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fdt_strerror(err));
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}
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}
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fdt_initrd(fdt, initrd_start, initrd_end, force);
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#ifdef CONFIG_OF_STDOUT_VIA_ALIAS
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path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL);
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if ((path == NULL) || force)
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err = fdt_fixup_stdout(fdt, nodeoffset);
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#endif
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#ifdef OF_STDOUT_PATH
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path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL);
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if ((path == NULL) || force) {
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err = fdt_setprop(fdt, nodeoffset,
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"linux,stdout-path", OF_STDOUT_PATH, strlen(OF_STDOUT_PATH)+1);
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if (err < 0)
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printf("WARNING: could not set linux,stdout-path %s.\n",
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fdt_strerror(err));
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}
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#endif
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return err;
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}
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void do_fixup_by_path(void *fdt, const char *path, 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' = ", path, 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, path, 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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path, prop, fdt_strerror(rc));
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}
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void do_fixup_by_path_u32(void *fdt, const char *path, 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_by_path(fdt, path, prop, &val, sizeof(val), create);
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}
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void do_fixup_by_prop(void *fdt,
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const char *pname, const void *pval, int plen,
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const char *prop, const void *val, int len,
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int create)
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{
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int off;
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#if defined(DEBUG)
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int i;
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debug("Updating property '%s' = ", 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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off = fdt_node_offset_by_prop_value(fdt, -1, pname, pval, plen);
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while (off != -FDT_ERR_NOTFOUND) {
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if (create || (fdt_get_property(fdt, off, prop, 0) != NULL))
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fdt_setprop(fdt, off, prop, val, len);
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off = fdt_node_offset_by_prop_value(fdt, off, pname, pval, plen);
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}
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}
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void do_fixup_by_prop_u32(void *fdt,
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const char *pname, const void *pval, int plen,
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const char *prop, u32 val, int create)
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{
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val = cpu_to_fdt32(val);
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do_fixup_by_prop(fdt, pname, pval, plen, prop, &val, 4, create);
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}
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void do_fixup_by_compat(void *fdt, const char *compat,
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const char *prop, const void *val, int len, int create)
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{
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int off = -1;
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#if defined(DEBUG)
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int i;
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debug("Updating property '%s' = ", 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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off = fdt_node_offset_by_compatible(fdt, -1, compat);
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while (off != -FDT_ERR_NOTFOUND) {
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if (create || (fdt_get_property(fdt, off, prop, 0) != NULL))
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fdt_setprop(fdt, off, prop, val, len);
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off = fdt_node_offset_by_compatible(fdt, off, compat);
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}
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}
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void do_fixup_by_compat_u32(void *fdt, const char *compat,
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const char *prop, u32 val, int create)
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{
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val = cpu_to_fdt32(val);
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do_fixup_by_compat(fdt, compat, prop, &val, 4, create);
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}
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int fdt_fixup_memory(void *blob, u64 start, u64 size)
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{
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int err, nodeoffset, len = 0;
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u8 tmp[16];
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const u32 *addrcell, *sizecell;
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err = fdt_check_header(blob);
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if (err < 0) {
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printf("%s: %s\n", __FUNCTION__, fdt_strerror(err));
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return err;
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}
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/* update, or add and update /memory node */
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nodeoffset = fdt_path_offset(blob, "/memory");
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if (nodeoffset < 0) {
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nodeoffset = fdt_add_subnode(blob, 0, "memory");
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if (nodeoffset < 0)
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printf("WARNING: could not create /memory: %s.\n",
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fdt_strerror(nodeoffset));
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return nodeoffset;
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}
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err = fdt_setprop(blob, nodeoffset, "device_type", "memory",
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sizeof("memory"));
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if (err < 0) {
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printf("WARNING: could not set %s %s.\n", "device_type",
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fdt_strerror(err));
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return err;
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}
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addrcell = fdt_getprop(blob, 0, "#address-cells", NULL);
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/* use shifts and mask to ensure endianness */
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if ((addrcell) && (*addrcell == 2)) {
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tmp[0] = (start >> 56) & 0xff;
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tmp[1] = (start >> 48) & 0xff;
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tmp[2] = (start >> 40) & 0xff;
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tmp[3] = (start >> 32) & 0xff;
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tmp[4] = (start >> 24) & 0xff;
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tmp[5] = (start >> 16) & 0xff;
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tmp[6] = (start >> 8) & 0xff;
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tmp[7] = (start ) & 0xff;
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len = 8;
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} else {
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tmp[0] = (start >> 24) & 0xff;
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tmp[1] = (start >> 16) & 0xff;
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tmp[2] = (start >> 8) & 0xff;
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tmp[3] = (start ) & 0xff;
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len = 4;
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}
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sizecell = fdt_getprop(blob, 0, "#size-cells", NULL);
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/* use shifts and mask to ensure endianness */
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if ((sizecell) && (*sizecell == 2)) {
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tmp[0+len] = (size >> 56) & 0xff;
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tmp[1+len] = (size >> 48) & 0xff;
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tmp[2+len] = (size >> 40) & 0xff;
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tmp[3+len] = (size >> 32) & 0xff;
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tmp[4+len] = (size >> 24) & 0xff;
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tmp[5+len] = (size >> 16) & 0xff;
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tmp[6+len] = (size >> 8) & 0xff;
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tmp[7+len] = (size ) & 0xff;
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len += 8;
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} else {
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tmp[0+len] = (size >> 24) & 0xff;
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tmp[1+len] = (size >> 16) & 0xff;
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tmp[2+len] = (size >> 8) & 0xff;
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tmp[3+len] = (size ) & 0xff;
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len += 4;
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}
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err = fdt_setprop(blob, nodeoffset, "reg", tmp, len);
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if (err < 0) {
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printf("WARNING: could not set %s %s.\n",
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"reg", fdt_strerror(err));
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return err;
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}
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return 0;
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}
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void fdt_fixup_ethernet(void *fdt)
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{
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int node, i, j;
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char enet[16], *tmp, *end;
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char mac[16] = "ethaddr";
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const char *path;
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unsigned char mac_addr[6];
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node = fdt_path_offset(fdt, "/aliases");
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if (node < 0)
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return;
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i = 0;
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while ((tmp = getenv(mac)) != NULL) {
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sprintf(enet, "ethernet%d", i);
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path = fdt_getprop(fdt, node, enet, NULL);
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if (!path) {
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debug("No alias for %s\n", enet);
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sprintf(mac, "eth%daddr", ++i);
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continue;
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}
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for (j = 0; j < 6; j++) {
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mac_addr[j] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
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if (tmp)
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tmp = (*end) ? end+1 : end;
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}
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do_fixup_by_path(fdt, path, "mac-address", &mac_addr, 6, 0);
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do_fixup_by_path(fdt, path, "local-mac-address",
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&mac_addr, 6, 1);
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sprintf(mac, "eth%daddr", ++i);
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}
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}
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#ifdef CONFIG_HAS_FSL_DR_USB
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void fdt_fixup_dr_usb(void *blob, bd_t *bd)
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{
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char *mode;
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char *type;
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const char *compat = "fsl-usb2-dr";
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const char *prop_mode = "dr_mode";
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const char *prop_type = "phy_type";
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int node_offset;
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int err;
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mode = getenv("usb_dr_mode");
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type = getenv("usb_phy_type");
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if (!mode && !type)
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return;
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node_offset = fdt_node_offset_by_compatible(blob, 0, compat);
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if (node_offset < 0) {
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printf("WARNING: could not find compatible node %s: %s.\n",
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compat, fdt_strerror(node_offset));
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return;
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}
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if (mode) {
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err = fdt_setprop(blob, node_offset, prop_mode, mode,
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strlen(mode) + 1);
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if (err < 0)
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printf("WARNING: could not set %s for %s: %s.\n",
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prop_mode, compat, fdt_strerror(err));
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}
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if (type) {
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err = fdt_setprop(blob, node_offset, prop_type, type,
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strlen(type) + 1);
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if (err < 0)
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printf("WARNING: could not set %s for %s: %s.\n",
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prop_type, compat, fdt_strerror(err));
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}
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}
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#endif /* CONFIG_HAS_FSL_DR_USB */
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#if defined(CONFIG_MPC83XX) || defined(CONFIG_MPC85xx)
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/*
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* update crypto node properties to a specified revision of the SEC
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* called with sec_rev == 0 if not on an mpc8xxxE processor
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*/
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void fdt_fixup_crypto_node(void *blob, int sec_rev)
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{
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const struct sec_rev_prop {
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u32 sec_rev;
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u32 num_channels;
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u32 channel_fifo_len;
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u32 exec_units_mask;
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u32 descriptor_types_mask;
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} sec_rev_prop_list [] = {
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{ 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
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{ 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
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{ 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
|
|
{ 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
|
|
{ 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
|
|
{ 0x0303, 4, 24, 0x97c, 0x03ab0abf }, /* SEC 3.3 */
|
|
};
|
|
char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
|
|
sizeof("fsl,secX.Y")];
|
|
int crypto_node, sec_idx, err;
|
|
char *p;
|
|
u32 val;
|
|
|
|
/* locate crypto node based on lowest common compatible */
|
|
crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0");
|
|
if (crypto_node == -FDT_ERR_NOTFOUND)
|
|
return;
|
|
|
|
/* delete it if not on an E-processor */
|
|
if (crypto_node > 0 && !sec_rev) {
|
|
fdt_del_node(blob, crypto_node);
|
|
return;
|
|
}
|
|
|
|
/* else we got called for possible uprev */
|
|
for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++)
|
|
if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev)
|
|
break;
|
|
|
|
if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
|
|
puts("warning: unknown SEC revision number\n");
|
|
return;
|
|
}
|
|
|
|
val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].num_channels);
|
|
err = fdt_setprop(blob, crypto_node, "fsl,num-channels", &val, 4);
|
|
if (err < 0)
|
|
printf("WARNING: could not set crypto property: %s\n",
|
|
fdt_strerror(err));
|
|
|
|
val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].descriptor_types_mask);
|
|
err = fdt_setprop(blob, crypto_node, "fsl,descriptor-types-mask", &val, 4);
|
|
if (err < 0)
|
|
printf("WARNING: could not set crypto property: %s\n",
|
|
fdt_strerror(err));
|
|
|
|
val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].exec_units_mask);
|
|
err = fdt_setprop(blob, crypto_node, "fsl,exec-units-mask", &val, 4);
|
|
if (err < 0)
|
|
printf("WARNING: could not set crypto property: %s\n",
|
|
fdt_strerror(err));
|
|
|
|
val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].channel_fifo_len);
|
|
err = fdt_setprop(blob, crypto_node, "fsl,channel-fifo-len", &val, 4);
|
|
if (err < 0)
|
|
printf("WARNING: could not set crypto property: %s\n",
|
|
fdt_strerror(err));
|
|
|
|
val = 0;
|
|
while (sec_idx >= 0) {
|
|
p = compat_strlist + val;
|
|
val += sprintf(p, "fsl,sec%d.%d",
|
|
(sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8,
|
|
sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1;
|
|
sec_idx--;
|
|
}
|
|
err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist, val);
|
|
if (err < 0)
|
|
printf("WARNING: could not set crypto property: %s\n",
|
|
fdt_strerror(err));
|
|
}
|
|
#endif /* defined(CONFIG_MPC83XX) || defined(CONFIG_MPC85xx) */
|
|
|
|
/* Resize the fdt to its actual size + a bit of padding */
|
|
int fdt_resize(void *blob)
|
|
{
|
|
int i;
|
|
uint64_t addr, size;
|
|
int total, ret;
|
|
uint actualsize;
|
|
|
|
if (!blob)
|
|
return 0;
|
|
|
|
total = fdt_num_mem_rsv(blob);
|
|
for (i = 0; i < total; i++) {
|
|
fdt_get_mem_rsv(blob, i, &addr, &size);
|
|
if (addr == (uint64_t)(u32)blob) {
|
|
fdt_del_mem_rsv(blob, i);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Calculate the actual size of the fdt */
|
|
actualsize = fdt_off_dt_strings(blob) +
|
|
fdt_size_dt_strings(blob);
|
|
|
|
/* Make it so the fdt ends on a page boundary */
|
|
actualsize = ALIGN(actualsize, 0x1000);
|
|
actualsize = actualsize - ((uint)blob & 0xfff);
|
|
|
|
/* Change the fdt header to reflect the correct size */
|
|
fdt_set_totalsize(blob, actualsize);
|
|
|
|
/* Add the new reservation */
|
|
ret = fdt_add_mem_rsv(blob, (uint)blob, actualsize);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return actualsize;
|
|
}
|