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[POWERPC] Add dt_xlate_addr() to bootwrapper

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dt_xlate_reg() looks up the 'reg' property in the specified node
to get the address and size to translate.  Add dt_xlate_addr()
which is passed in the address and size to translate.

Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Mark A. Greer 2007-04-28 06:48:24 +10:00 committed by Paul Mackerras
parent d818d7ec8b
commit 8895ea483e
2 changed files with 35 additions and 16 deletions
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47
arch/powerpc/boot/devtree.c
View file

@ -207,12 +207,13 @@ static int find_range(u32 *reg, u32 *ranges, int nregaddr,
* In particular, PCI is not supported. Also, only the beginning of the
* reg block is tracked; size is ignored except in ranges.
*/
int dt_xlate_reg(void *node, int res, unsigned long *addr,
unsigned long *size)
static u32 dt_xlate_buf[MAX_ADDR_CELLS * MAX_RANGES * 3];
static int dt_xlate(void *node, int res, int reglen, unsigned long *addr,
unsigned long *size)
{
u32 last_addr[MAX_ADDR_CELLS];
u32 this_addr[MAX_ADDR_CELLS];
u32 buf[MAX_ADDR_CELLS * MAX_RANGES * 3];
void *parent;
u64 ret_addr, ret_size;
u32 naddr, nsize, prev_naddr;
@ -227,19 +228,18 @@ int dt_xlate_reg(void *node, int res, unsigned long *addr,
if (nsize > 2)
return 0;
buflen = getprop(node, "reg", buf, sizeof(buf)) / 4;
offset = (naddr + nsize) * res;
if (buflen < offset + naddr + nsize ||
sizeof(buf) < offset + naddr + nsize)
if (reglen < offset + naddr + nsize ||
sizeof(dt_xlate_buf) < offset + naddr + nsize)
return 0;
copy_val(last_addr, buf + offset, naddr);
copy_val(last_addr, dt_xlate_buf + offset, naddr);
ret_size = buf[offset + naddr];
ret_size = dt_xlate_buf[offset + naddr];
if (nsize == 2) {
ret_size <<= 32;
ret_size |= buf[offset + naddr + 1];
ret_size |= dt_xlate_buf[offset + naddr + 1];
}
while ((node = get_parent(node))) {
@ -247,24 +247,25 @@ int dt_xlate_reg(void *node, int res, unsigned long *addr,
get_reg_format(node, &naddr, &nsize);
buflen = getprop(node, "ranges", buf, sizeof(buf));
buflen = getprop(node, "ranges", dt_xlate_buf,
sizeof(dt_xlate_buf));
if (buflen < 0)
continue;
if (buflen > sizeof(buf))
if (buflen > sizeof(dt_xlate_buf))
return 0;
offset = find_range(last_addr, buf, prev_naddr,
offset = find_range(last_addr, dt_xlate_buf, prev_naddr,
naddr, nsize, buflen / 4);
if (offset < 0)
return 0;
copy_val(this_addr, buf + offset, prev_naddr);
copy_val(this_addr, dt_xlate_buf + offset, prev_naddr);
if (!sub_reg(last_addr, this_addr))
return 0;
copy_val(this_addr, buf + offset + prev_naddr, naddr);
copy_val(this_addr, dt_xlate_buf + offset + prev_naddr, naddr);
if (!add_reg(last_addr, this_addr, naddr))
return 0;
@ -286,3 +287,21 @@ int dt_xlate_reg(void *node, int res, unsigned long *addr,
return 1;
}
int dt_xlate_reg(void *node, int res, unsigned long *addr, unsigned long *size)
{
int reglen;
reglen = getprop(node, "reg", dt_xlate_buf, sizeof(dt_xlate_buf)) / 4;
return dt_xlate(node, res, reglen, addr, size);
}
int dt_xlate_addr(void *node, u32 *buf, int buflen, unsigned long *xlated_addr)
{
if (buflen > sizeof(dt_xlate_buf))
return 0;
memcpy(dt_xlate_buf, buf, buflen);
return dt_xlate(node, 0, buflen / 4, xlated_addr, NULL);
}

4
arch/powerpc/boot/ops.h
View file

@ -82,8 +82,8 @@ int ns16550_console_init(void *devp, struct serial_console_data *scdp);
void *simple_alloc_init(char *base, unsigned long heap_size,
unsigned long granularity, unsigned long max_allocs);
extern void flush_cache(void *, unsigned long);
int dt_xlate_reg(void *node, int res, unsigned long *addr,
unsigned long *size);
int dt_xlate_reg(void *node, int res, unsigned long *addr, unsigned long *size);
int dt_xlate_addr(void *node, u32 *buf, int buflen, unsigned long *xlated_addr);
static inline void *finddevice(const char *name)
{