u-boot/common/fdt_support.c
Kim Phillips 3057c6be5e fdt_support: add entry for sec3.1 and fix sec3.3
Add sec3.1 h/w geometry for fdt node fixups.

Also, technically, whilst SEC v3.3 h/w honours the tls_ssl_stream descriptor
type, it lacks the ARC4 algorithm execution unit required to be able
to execute anything meaningful with it.  Change the node to agree with
the documentation that declares that the sec3.3 really doesn't have such
a descriptor type.

Reported-by: Haiying Wang <Haiying.Wang@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-05-30 11:14:37 -05:00

992 lines
24 KiB
C

/*
* (C) Copyright 2007
* Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
*
* 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
*/
#include <common.h>
#include <stdio_dev.h>
#include <linux/ctype.h>
#include <linux/types.h>
#include <asm/global_data.h>
#include <fdt.h>
#include <libfdt.h>
#include <fdt_support.h>
#include <exports.h>
/*
* Global data (for the gd->bd)
*/
DECLARE_GLOBAL_DATA_PTR;
/**
* fdt_getprop_u32_default - Find a node and return it's property or a default
*
* @fdt: ptr to device tree
* @path: path of node
* @prop: property name
* @dflt: default value if the property isn't found
*
* Convenience function to find a node and return it's property or a
* default value if it doesn't exist.
*/
u32 fdt_getprop_u32_default(void *fdt, const char *path, const char *prop,
const u32 dflt)
{
const u32 *val;
int off;
off = fdt_path_offset(fdt, path);
if (off < 0)
return dflt;
val = fdt_getprop(fdt, off, prop, NULL);
if (val)
return *val;
else
return dflt;
}
/**
* fdt_find_and_setprop: Find a node and set it's property
*
* @fdt: ptr to device tree
* @node: path of node
* @prop: property name
* @val: ptr to new value
* @len: length of new property value
* @create: flag to create the property if it doesn't exist
*
* Convenience function to directly set a property given the path to the node.
*/
int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
const void *val, int len, int create)
{
int nodeoff = fdt_path_offset(fdt, node);
if (nodeoff < 0)
return nodeoff;
if ((!create) && (fdt_get_property(fdt, nodeoff, prop, 0) == NULL))
return 0; /* create flag not set; so exit quietly */
return fdt_setprop(fdt, nodeoff, prop, val, len);
}
#ifdef CONFIG_OF_STDOUT_VIA_ALIAS
#ifdef CONFIG_SERIAL_MULTI
static void fdt_fill_multisername(char *sername, size_t maxlen)
{
const char *outname = stdio_devices[stdout]->name;
if (strcmp(outname, "serial") > 0)
strncpy(sername, outname, maxlen);
/* eserial? */
if (strcmp(outname + 1, "serial") > 0)
strncpy(sername, outname + 1, maxlen);
}
#else
static inline void fdt_fill_multisername(char *sername, size_t maxlen) {}
#endif /* CONFIG_SERIAL_MULTI */
static int fdt_fixup_stdout(void *fdt, int chosenoff)
{
int err = 0;
#ifdef CONFIG_CONS_INDEX
int node;
char sername[9] = { 0 };
const char *path;
fdt_fill_multisername(sername, sizeof(sername) - 1);
if (!sername[0])
sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1);
err = node = fdt_path_offset(fdt, "/aliases");
if (node >= 0) {
int len;
path = fdt_getprop(fdt, node, sername, &len);
if (path) {
char *p = malloc(len);
err = -FDT_ERR_NOSPACE;
if (p) {
memcpy(p, path, len);
err = fdt_setprop(fdt, chosenoff,
"linux,stdout-path", p, len);
free(p);
}
} else {
err = len;
}
}
#endif
if (err < 0)
printf("WARNING: could not set linux,stdout-path %s.\n",
fdt_strerror(err));
return err;
}
#endif
int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end, int force)
{
int nodeoffset;
int err, j, total;
u32 tmp;
const char *path;
uint64_t addr, size;
/* Find the "chosen" node. */
nodeoffset = fdt_path_offset (fdt, "/chosen");
/* If there is no "chosen" node in the blob return */
if (nodeoffset < 0) {
printf("fdt_initrd: %s\n", fdt_strerror(nodeoffset));
return nodeoffset;
}
/* just return if initrd_start/end aren't valid */
if ((initrd_start == 0) || (initrd_end == 0))
return 0;
total = fdt_num_mem_rsv(fdt);
/*
* Look for an existing entry and update it. If we don't find
* the entry, we will j be the next available slot.
*/
for (j = 0; j < total; j++) {
err = fdt_get_mem_rsv(fdt, j, &addr, &size);
if (addr == initrd_start) {
fdt_del_mem_rsv(fdt, j);
break;
}
}
err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start + 1);
if (err < 0) {
printf("fdt_initrd: %s\n", fdt_strerror(err));
return err;
}
path = fdt_getprop(fdt, nodeoffset, "linux,initrd-start", NULL);
if ((path == NULL) || force) {
tmp = __cpu_to_be32(initrd_start);
err = fdt_setprop(fdt, nodeoffset,
"linux,initrd-start", &tmp, sizeof(tmp));
if (err < 0) {
printf("WARNING: "
"could not set linux,initrd-start %s.\n",
fdt_strerror(err));
return err;
}
tmp = __cpu_to_be32(initrd_end);
err = fdt_setprop(fdt, nodeoffset,
"linux,initrd-end", &tmp, sizeof(tmp));
if (err < 0) {
printf("WARNING: could not set linux,initrd-end %s.\n",
fdt_strerror(err));
return err;
}
}
return 0;
}
int fdt_chosen(void *fdt, int force)
{
int nodeoffset;
int err;
char *str; /* used to set string properties */
const char *path;
err = fdt_check_header(fdt);
if (err < 0) {
printf("fdt_chosen: %s\n", fdt_strerror(err));
return err;
}
/*
* Find the "chosen" node.
*/
nodeoffset = fdt_path_offset (fdt, "/chosen");
/*
* If there is no "chosen" node in the blob, create it.
*/
if (nodeoffset < 0) {
/*
* Create a new node "/chosen" (offset 0 is root level)
*/
nodeoffset = fdt_add_subnode(fdt, 0, "chosen");
if (nodeoffset < 0) {
printf("WARNING: could not create /chosen %s.\n",
fdt_strerror(nodeoffset));
return nodeoffset;
}
}
/*
* Create /chosen properites that don't exist in the fdt.
* If the property exists, update it only if the "force" parameter
* is true.
*/
str = getenv("bootargs");
if (str != NULL) {
path = fdt_getprop(fdt, nodeoffset, "bootargs", NULL);
if ((path == NULL) || force) {
err = fdt_setprop(fdt, nodeoffset,
"bootargs", str, strlen(str)+1);
if (err < 0)
printf("WARNING: could not set bootargs %s.\n",
fdt_strerror(err));
}
}
#ifdef CONFIG_OF_STDOUT_VIA_ALIAS
path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL);
if ((path == NULL) || force)
err = fdt_fixup_stdout(fdt, nodeoffset);
#endif
#ifdef OF_STDOUT_PATH
path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL);
if ((path == NULL) || force) {
err = fdt_setprop(fdt, nodeoffset,
"linux,stdout-path", OF_STDOUT_PATH, strlen(OF_STDOUT_PATH)+1);
if (err < 0)
printf("WARNING: could not set linux,stdout-path %s.\n",
fdt_strerror(err));
}
#endif
return err;
}
void do_fixup_by_path(void *fdt, const char *path, const char *prop,
const void *val, int len, int create)
{
#if defined(DEBUG)
int i;
debug("Updating property '%s/%s' = ", path, prop);
for (i = 0; i < len; i++)
debug(" %.2x", *(u8*)(val+i));
debug("\n");
#endif
int rc = fdt_find_and_setprop(fdt, path, prop, val, len, create);
if (rc)
printf("Unable to update property %s:%s, err=%s\n",
path, prop, fdt_strerror(rc));
}
void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop,
u32 val, int create)
{
val = cpu_to_fdt32(val);
do_fixup_by_path(fdt, path, prop, &val, sizeof(val), create);
}
void do_fixup_by_prop(void *fdt,
const char *pname, const void *pval, int plen,
const char *prop, const void *val, int len,
int create)
{
int off;
#if defined(DEBUG)
int i;
debug("Updating property '%s' = ", prop);
for (i = 0; i < len; i++)
debug(" %.2x", *(u8*)(val+i));
debug("\n");
#endif
off = fdt_node_offset_by_prop_value(fdt, -1, pname, pval, plen);
while (off != -FDT_ERR_NOTFOUND) {
if (create || (fdt_get_property(fdt, off, prop, 0) != NULL))
fdt_setprop(fdt, off, prop, val, len);
off = fdt_node_offset_by_prop_value(fdt, off, pname, pval, plen);
}
}
void do_fixup_by_prop_u32(void *fdt,
const char *pname, const void *pval, int plen,
const char *prop, u32 val, int create)
{
val = cpu_to_fdt32(val);
do_fixup_by_prop(fdt, pname, pval, plen, prop, &val, 4, create);
}
void do_fixup_by_compat(void *fdt, const char *compat,
const char *prop, const void *val, int len, int create)
{
int off = -1;
#if defined(DEBUG)
int i;
debug("Updating property '%s' = ", prop);
for (i = 0; i < len; i++)
debug(" %.2x", *(u8*)(val+i));
debug("\n");
#endif
off = fdt_node_offset_by_compatible(fdt, -1, compat);
while (off != -FDT_ERR_NOTFOUND) {
if (create || (fdt_get_property(fdt, off, prop, 0) != NULL))
fdt_setprop(fdt, off, prop, val, len);
off = fdt_node_offset_by_compatible(fdt, off, compat);
}
}
void do_fixup_by_compat_u32(void *fdt, const char *compat,
const char *prop, u32 val, int create)
{
val = cpu_to_fdt32(val);
do_fixup_by_compat(fdt, compat, prop, &val, 4, create);
}
int fdt_fixup_memory(void *blob, u64 start, u64 size)
{
int err, nodeoffset, len = 0;
u8 tmp[16];
const u32 *addrcell, *sizecell;
err = fdt_check_header(blob);
if (err < 0) {
printf("%s: %s\n", __FUNCTION__, fdt_strerror(err));
return err;
}
/* update, or add and update /memory node */
nodeoffset = fdt_path_offset(blob, "/memory");
if (nodeoffset < 0) {
nodeoffset = fdt_add_subnode(blob, 0, "memory");
if (nodeoffset < 0)
printf("WARNING: could not create /memory: %s.\n",
fdt_strerror(nodeoffset));
return nodeoffset;
}
err = fdt_setprop(blob, nodeoffset, "device_type", "memory",
sizeof("memory"));
if (err < 0) {
printf("WARNING: could not set %s %s.\n", "device_type",
fdt_strerror(err));
return err;
}
addrcell = fdt_getprop(blob, 0, "#address-cells", NULL);
/* use shifts and mask to ensure endianness */
if ((addrcell) && (*addrcell == 2)) {
tmp[0] = (start >> 56) & 0xff;
tmp[1] = (start >> 48) & 0xff;
tmp[2] = (start >> 40) & 0xff;
tmp[3] = (start >> 32) & 0xff;
tmp[4] = (start >> 24) & 0xff;
tmp[5] = (start >> 16) & 0xff;
tmp[6] = (start >> 8) & 0xff;
tmp[7] = (start ) & 0xff;
len = 8;
} else {
tmp[0] = (start >> 24) & 0xff;
tmp[1] = (start >> 16) & 0xff;
tmp[2] = (start >> 8) & 0xff;
tmp[3] = (start ) & 0xff;
len = 4;
}
sizecell = fdt_getprop(blob, 0, "#size-cells", NULL);
/* use shifts and mask to ensure endianness */
if ((sizecell) && (*sizecell == 2)) {
tmp[0+len] = (size >> 56) & 0xff;
tmp[1+len] = (size >> 48) & 0xff;
tmp[2+len] = (size >> 40) & 0xff;
tmp[3+len] = (size >> 32) & 0xff;
tmp[4+len] = (size >> 24) & 0xff;
tmp[5+len] = (size >> 16) & 0xff;
tmp[6+len] = (size >> 8) & 0xff;
tmp[7+len] = (size ) & 0xff;
len += 8;
} else {
tmp[0+len] = (size >> 24) & 0xff;
tmp[1+len] = (size >> 16) & 0xff;
tmp[2+len] = (size >> 8) & 0xff;
tmp[3+len] = (size ) & 0xff;
len += 4;
}
err = fdt_setprop(blob, nodeoffset, "reg", tmp, len);
if (err < 0) {
printf("WARNING: could not set %s %s.\n",
"reg", fdt_strerror(err));
return err;
}
return 0;
}
void fdt_fixup_ethernet(void *fdt)
{
int node, i, j;
char enet[16], *tmp, *end;
char mac[16] = "ethaddr";
const char *path;
unsigned char mac_addr[6];
node = fdt_path_offset(fdt, "/aliases");
if (node < 0)
return;
i = 0;
while ((tmp = getenv(mac)) != NULL) {
sprintf(enet, "ethernet%d", i);
path = fdt_getprop(fdt, node, enet, NULL);
if (!path) {
debug("No alias for %s\n", enet);
sprintf(mac, "eth%daddr", ++i);
continue;
}
for (j = 0; j < 6; j++) {
mac_addr[j] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
if (tmp)
tmp = (*end) ? end+1 : end;
}
do_fixup_by_path(fdt, path, "mac-address", &mac_addr, 6, 0);
do_fixup_by_path(fdt, path, "local-mac-address",
&mac_addr, 6, 1);
sprintf(mac, "eth%daddr", ++i);
}
}
#ifdef CONFIG_HAS_FSL_DR_USB
void fdt_fixup_dr_usb(void *blob, bd_t *bd)
{
char *mode;
char *type;
const char *compat = "fsl-usb2-dr";
const char *prop_mode = "dr_mode";
const char *prop_type = "phy_type";
int node_offset;
int err;
mode = getenv("usb_dr_mode");
type = getenv("usb_phy_type");
if (!mode && !type)
return;
node_offset = fdt_node_offset_by_compatible(blob, 0, compat);
if (node_offset < 0) {
printf("WARNING: could not find compatible node %s: %s.\n",
compat, fdt_strerror(node_offset));
return;
}
if (mode) {
err = fdt_setprop(blob, node_offset, prop_mode, mode,
strlen(mode) + 1);
if (err < 0)
printf("WARNING: could not set %s for %s: %s.\n",
prop_mode, compat, fdt_strerror(err));
}
if (type) {
err = fdt_setprop(blob, node_offset, prop_type, type,
strlen(type) + 1);
if (err < 0)
printf("WARNING: could not set %s for %s: %s.\n",
prop_type, compat, fdt_strerror(err));
}
}
#endif /* CONFIG_HAS_FSL_DR_USB */
#if defined(CONFIG_MPC83xx) || defined(CONFIG_MPC85xx)
/*
* update crypto node properties to a specified revision of the SEC
* called with sec_rev == 0 if not on an mpc8xxxE processor
*/
void fdt_fixup_crypto_node(void *blob, int sec_rev)
{
const struct sec_rev_prop {
u32 sec_rev;
u32 num_channels;
u32 channel_fifo_len;
u32 exec_units_mask;
u32 descriptor_types_mask;
} sec_rev_prop_list [] = {
{ 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
{ 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
{ 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
{ 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
{ 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
{ 0x0301, 4, 24, 0xbfe, 0x03ab0ebf }, /* SEC 3.1 */
{ 0x0303, 4, 24, 0x97c, 0x03a30abf }, /* 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
* plus the size needed for two fdt_add_mem_rsv, one
* for the fdt itself and one for a possible initrd
*/
actualsize = fdt_off_dt_strings(blob) +
fdt_size_dt_strings(blob) + 2*sizeof(struct fdt_reserve_entry);
/* Make it so the fdt ends on a page boundary */
actualsize = ALIGN(actualsize + ((uint)blob & 0xfff), 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;
}
#ifdef CONFIG_PCI
#define CONFIG_SYS_PCI_NR_INBOUND_WIN 4
#define FDT_PCI_PREFETCH (0x40000000)
#define FDT_PCI_MEM32 (0x02000000)
#define FDT_PCI_IO (0x01000000)
#define FDT_PCI_MEM64 (0x03000000)
int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose) {
int addrcell, sizecell, len, r;
u32 *dma_range;
/* sized based on pci addr cells, size-cells, & address-cells */
u32 dma_ranges[(3 + 2 + 2) * CONFIG_SYS_PCI_NR_INBOUND_WIN];
addrcell = fdt_getprop_u32_default(blob, "/", "#address-cells", 1);
sizecell = fdt_getprop_u32_default(blob, "/", "#size-cells", 1);
dma_range = &dma_ranges[0];
for (r = 0; r < hose->region_count; r++) {
u64 bus_start, phys_start, size;
/* skip if !PCI_REGION_SYS_MEMORY */
if (!(hose->regions[r].flags & PCI_REGION_SYS_MEMORY))
continue;
bus_start = (u64)hose->regions[r].bus_start;
phys_start = (u64)hose->regions[r].phys_start;
size = (u64)hose->regions[r].size;
dma_range[0] = 0;
if (size >= 0x100000000ull)
dma_range[0] |= FDT_PCI_MEM64;
else
dma_range[0] |= FDT_PCI_MEM32;
if (hose->regions[r].flags & PCI_REGION_PREFETCH)
dma_range[0] |= FDT_PCI_PREFETCH;
#ifdef CONFIG_SYS_PCI_64BIT
dma_range[1] = bus_start >> 32;
#else
dma_range[1] = 0;
#endif
dma_range[2] = bus_start & 0xffffffff;
if (addrcell == 2) {
dma_range[3] = phys_start >> 32;
dma_range[4] = phys_start & 0xffffffff;
} else {
dma_range[3] = phys_start & 0xffffffff;
}
if (sizecell == 2) {
dma_range[3 + addrcell + 0] = size >> 32;
dma_range[3 + addrcell + 1] = size & 0xffffffff;
} else {
dma_range[3 + addrcell + 0] = size & 0xffffffff;
}
dma_range += (3 + addrcell + sizecell);
}
len = dma_range - &dma_ranges[0];
if (len)
fdt_setprop(blob, phb_off, "dma-ranges", &dma_ranges[0], len*4);
return 0;
}
#endif
#ifdef CONFIG_FDT_FIXUP_NOR_FLASH_SIZE
/*
* This function can be used to update the size in the "reg" property
* of the NOR FLASH device nodes. This is necessary for boards with
* non-fixed NOR FLASH sizes.
*/
int fdt_fixup_nor_flash_size(void *blob, int cs, u32 size)
{
char compat[][16] = { "cfi-flash", "jedec-flash" };
int off;
int len;
struct fdt_property *prop;
u32 *reg;
int i;
for (i = 0; i < 2; i++) {
off = fdt_node_offset_by_compatible(blob, -1, compat[i]);
while (off != -FDT_ERR_NOTFOUND) {
/*
* Found one compatible node, now check if this one
* has the correct CS
*/
prop = fdt_get_property_w(blob, off, "reg", &len);
if (prop) {
reg = (u32 *)&prop->data[0];
if (reg[0] == cs) {
reg[2] = size;
fdt_setprop(blob, off, "reg", reg,
3 * sizeof(u32));
return 0;
}
}
/* Move to next compatible node */
off = fdt_node_offset_by_compatible(blob, off,
compat[i]);
}
}
return -1;
}
#endif
#ifdef CONFIG_FDT_FIXUP_PARTITIONS
#include <jffs2/load_kernel.h>
#include <mtd_node.h>
struct reg_cell {
unsigned int r0;
unsigned int r1;
};
int fdt_del_subnodes(const void *blob, int parent_offset)
{
int off, ndepth;
int ret;
for (ndepth = 0, off = fdt_next_node(blob, parent_offset, &ndepth);
(off >= 0) && (ndepth > 0);
off = fdt_next_node(blob, off, &ndepth)) {
if (ndepth == 1) {
debug("delete %s: offset: %x\n",
fdt_get_name(blob, off, 0), off);
ret = fdt_del_node((void *)blob, off);
if (ret < 0) {
printf("Can't delete node: %s\n",
fdt_strerror(ret));
return ret;
} else {
ndepth = 0;
off = parent_offset;
}
}
}
return 0;
}
int fdt_increase_size(void *fdt, int add_len)
{
int newlen;
newlen = fdt_totalsize(fdt) + add_len;
/* Open in place with a new len */
return fdt_open_into(fdt, fdt, newlen);
}
int fdt_del_partitions(void *blob, int parent_offset)
{
const void *prop;
int ndepth = 0;
int off;
int ret;
off = fdt_next_node(blob, parent_offset, &ndepth);
if (off > 0 && ndepth == 1) {
prop = fdt_getprop(blob, off, "label", NULL);
if (prop == NULL) {
/*
* Could not find label property, nand {}; node?
* Check subnode, delete partitions there if any.
*/
return fdt_del_partitions(blob, off);
} else {
ret = fdt_del_subnodes(blob, parent_offset);
if (ret < 0) {
printf("Can't remove subnodes: %s\n",
fdt_strerror(ret));
return ret;
}
}
}
return 0;
}
int fdt_node_set_part_info(void *blob, int parent_offset,
struct mtd_device *dev)
{
struct list_head *pentry;
struct part_info *part;
struct reg_cell cell;
int off, ndepth = 0;
int part_num, ret;
char buf[64];
ret = fdt_del_partitions(blob, parent_offset);
if (ret < 0)
return ret;
/*
* Check if it is nand {}; subnode, adjust
* the offset in this case
*/
off = fdt_next_node(blob, parent_offset, &ndepth);
if (off > 0 && ndepth == 1)
parent_offset = off;
part_num = 0;
list_for_each_prev(pentry, &dev->parts) {
int newoff;
part = list_entry(pentry, struct part_info, link);
debug("%2d: %-20s0x%08x\t0x%08x\t%d\n",
part_num, part->name, part->size,
part->offset, part->mask_flags);
sprintf(buf, "partition@%x", part->offset);
add_sub:
ret = fdt_add_subnode(blob, parent_offset, buf);
if (ret == -FDT_ERR_NOSPACE) {
ret = fdt_increase_size(blob, 512);
if (!ret)
goto add_sub;
else
goto err_size;
} else if (ret < 0) {
printf("Can't add partition node: %s\n",
fdt_strerror(ret));
return ret;
}
newoff = ret;
/* Check MTD_WRITEABLE_CMD flag */
if (part->mask_flags & 1) {
add_ro:
ret = fdt_setprop(blob, newoff, "read_only", NULL, 0);
if (ret == -FDT_ERR_NOSPACE) {
ret = fdt_increase_size(blob, 512);
if (!ret)
goto add_ro;
else
goto err_size;
} else if (ret < 0)
goto err_prop;
}
cell.r0 = cpu_to_fdt32(part->offset);
cell.r1 = cpu_to_fdt32(part->size);
add_reg:
ret = fdt_setprop(blob, newoff, "reg", &cell, sizeof(cell));
if (ret == -FDT_ERR_NOSPACE) {
ret = fdt_increase_size(blob, 512);
if (!ret)
goto add_reg;
else
goto err_size;
} else if (ret < 0)
goto err_prop;
add_label:
ret = fdt_setprop_string(blob, newoff, "label", part->name);
if (ret == -FDT_ERR_NOSPACE) {
ret = fdt_increase_size(blob, 512);
if (!ret)
goto add_label;
else
goto err_size;
} else if (ret < 0)
goto err_prop;
part_num++;
}
return 0;
err_size:
printf("Can't increase blob size: %s\n", fdt_strerror(ret));
return ret;
err_prop:
printf("Can't add property: %s\n", fdt_strerror(ret));
return ret;
}
/*
* Update partitions in nor/nand nodes using info from
* mtdparts environment variable. The nodes to update are
* specified by node_info structure which contains mtd device
* type and compatible string: E. g. the board code in
* ft_board_setup() could use:
*
* struct node_info nodes[] = {
* { "fsl,mpc5121-nfc", MTD_DEV_TYPE_NAND, },
* { "cfi-flash", MTD_DEV_TYPE_NOR, },
* };
*
* fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
*/
void fdt_fixup_mtdparts(void *blob, void *node_info, int node_info_size)
{
struct node_info *ni = node_info;
struct mtd_device *dev;
char *parts;
int i, idx;
int noff;
parts = getenv("mtdparts");
if (!parts)
return;
if (mtdparts_init() != 0)
return;
for (i = 0; i < node_info_size; i++) {
idx = 0;
noff = fdt_node_offset_by_compatible(blob, -1, ni[i].compat);
while (noff != -FDT_ERR_NOTFOUND) {
debug("%s: %s, mtd dev type %d\n",
fdt_get_name(blob, noff, 0),
ni[i].compat, ni[i].type);
dev = device_find(ni[i].type, idx++);
if (dev) {
if (fdt_node_set_part_info(blob, noff, dev))
return; /* return on error */
}
/* Jump to next flash node */
noff = fdt_node_offset_by_compatible(blob, noff,
ni[i].compat);
}
}
}
#endif
void fdt_del_node_and_alias(void *blob, const char *alias)
{
int off = fdt_path_offset(blob, alias);
if (off < 0)
return;
fdt_del_node(blob, off);
off = fdt_path_offset(blob, "/aliases");
fdt_delprop(blob, off, alias);
}