mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 14:23:00 +00:00
8f9877df95
Add support for accessing an entry's contents in memory-mapped SPI flash. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
97 lines
2.2 KiB
C
97 lines
2.2 KiB
C
// SPDX-License-Identifier: Intel
|
|
/*
|
|
* Access to binman information at runtime
|
|
*
|
|
* Copyright 2019 Google LLC
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <binman.h>
|
|
#include <dm.h>
|
|
#include <log.h>
|
|
#include <malloc.h>
|
|
#include <mapmem.h>
|
|
|
|
/**
|
|
* struct binman_info - Information needed by the binman library
|
|
*
|
|
* @image: Node describing the image we are running from
|
|
* @rom_offset: Offset from an image_pos to the memory-mapped address, or
|
|
* ROM_OFFSET_NONE if the ROM is not memory-mapped. Can be positive or
|
|
* negative
|
|
*/
|
|
struct binman_info {
|
|
ofnode image;
|
|
int rom_offset;
|
|
};
|
|
|
|
#define ROM_OFFSET_NONE (-1)
|
|
|
|
static struct binman_info *binman;
|
|
|
|
static int binman_entry_find_internal(ofnode node, const char *name,
|
|
struct binman_entry *entry)
|
|
{
|
|
int ret;
|
|
|
|
if (!ofnode_valid(node))
|
|
node = binman->image;
|
|
node = ofnode_find_subnode(node, name);
|
|
if (!ofnode_valid(node))
|
|
return log_msg_ret("node", -ENOENT);
|
|
|
|
ret = ofnode_read_u32(node, "image-pos", &entry->image_pos);
|
|
if (ret)
|
|
return log_msg_ret("import-pos", ret);
|
|
ret = ofnode_read_u32(node, "size", &entry->size);
|
|
if (ret)
|
|
return log_msg_ret("size", ret);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int binman_entry_find(const char *name, struct binman_entry *entry)
|
|
{
|
|
return binman_entry_find_internal(binman->image, name, entry);
|
|
}
|
|
|
|
int binman_entry_map(ofnode parent, const char *name, void **bufp, int *sizep)
|
|
{
|
|
struct binman_entry entry;
|
|
int ret;
|
|
|
|
if (binman->rom_offset == ROM_OFFSET_NONE)
|
|
return -EPERM;
|
|
ret = binman_entry_find_internal(parent, name, &entry);
|
|
if (ret)
|
|
return log_msg_ret("entry", ret);
|
|
if (sizep)
|
|
*sizep = entry.size;
|
|
*bufp = map_sysmem(entry.image_pos + binman->rom_offset, entry.size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
ofnode binman_section_find_node(const char *name)
|
|
{
|
|
return ofnode_find_subnode(binman->image, name);
|
|
}
|
|
|
|
void binman_set_rom_offset(int rom_offset)
|
|
{
|
|
binman->rom_offset = rom_offset;
|
|
}
|
|
|
|
int binman_init(void)
|
|
{
|
|
binman = malloc(sizeof(struct binman_info));
|
|
if (!binman)
|
|
return log_msg_ret("space for binman", -ENOMEM);
|
|
binman->image = ofnode_path("/binman");
|
|
if (!ofnode_valid(binman->image))
|
|
return log_msg_ret("binman node", -EINVAL);
|
|
binman->rom_offset = ROM_OFFSET_NONE;
|
|
|
|
return 0;
|
|
}
|