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x86: Adjust mrccache_get_region() to support get_mmap()

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It is now possible to obtain the memory map for a SPI controllers instead
of having it hard-coded in the device tree. Update the code to support
this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2019-12-06 21:42:04 -07:00 committed by Bin Meng
parent 87f1084a63
commit 506f224977
1 changed files with 14 additions and 4 deletions
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18
arch/x86/lib/mrccache.c
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@ -210,6 +210,9 @@ int mrccache_get_region(struct udevice **devp, struct mrc_region *entry)
{
struct udevice *dev;
ofnode mrc_node;
ulong map_base;
uint map_size;
uint offset;
u32 reg[2];
int ret;
@ -221,10 +224,15 @@ int mrccache_get_region(struct udevice **devp, struct mrc_region *entry)
ret = uclass_find_first_device(UCLASS_SPI_FLASH, &dev);
if (ret)
return log_msg_ret("Cannot find SPI flash\n", ret);
ret = dev_read_u32_array(dev, "memory-map", reg, 2);
if (ret)
return log_msg_ret("Cannot find memory map\n", ret);
entry->base = reg[0];
ret = dm_spi_get_mmap(dev, &map_base, &map_size, &offset);
if (!ret) {
entry->base = map_base;
} else {
ret = dev_read_u32_array(dev, "memory-map", reg, 2);
if (ret)
return log_msg_ret("Cannot find memory map\n", ret);
entry->base = reg[0];
}
/* Find the place where we put the MRC cache */
mrc_node = dev_read_subnode(dev, "rw-mrc-cache");
@ -239,6 +247,8 @@ int mrccache_get_region(struct udevice **devp, struct mrc_region *entry)
if (devp)
*devp = dev;
debug("MRC cache in '%s', offset %x, len %x, base %x\n",
dev->name, entry->offset, entry->length, entry->base);
return 0;
}