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x86: apl: fsp_bindings: Add support for u64 parameters

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Add FSP_UINT64 read support as preparation for FSP-M and FSP-S parameter
update.

Signed-off-by: Bernhard Messerklinger <bernhard.messerklinger@br-automation.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bernhard Messerklinger 2020-07-22 09:29:38 +02:00 committed by Bin Meng
parent 491135805e
commit 858e5a1a8b
2 changed files with 29 additions and 0 deletions
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28
arch/x86/cpu/apollolake/fsp_bindings.c
View File

@ -89,6 +89,28 @@ static void read_u32_prop(ofnode node, char *name, size_t count, u32 *dst)
ofnode_read_u32_array(node, name, dst, count);
}
/**
* read_u64_prop() - Read an u64 property from devicetree (scalar or array)
* @node: Valid node reference to read property from
* @name: Name of the property to read from
* @count: If the property is expected to be an array, this is the
* number of expected elements
* set to 0 if the property is expected to be a scalar
* @dst: Pointer to destination of where to save the value(s) read
* from devicetree
*/
static int read_u64_prop(ofnode node, char *name, size_t count, u64 *dst)
{
if (count == 0) {
ofnode_read_u64(node, name, dst);
} else {
debug("ERROR: %s u64 arrays not supported!\n", __func__);
return -EINVAL;
}
return 0;
}
/**
* read_string_prop() - Read a string property from devicetree
* @node: Valid node reference to read property from
@ -206,6 +228,12 @@ static int fsp_update_config_from_dtb(ofnode node, u8 *cfg,
read_u32_prop(node, fspb->propname, fspb->count,
(u32 *)&cfg[fspb->offset]);
break;
case FSP_UINT64:
ret = read_u64_prop(node, fspb->propname, fspb->count,
(u64 *)&cfg[fspb->offset]);
if (ret)
return ret;
break;
case FSP_STRING:
read_string_prop(node, fspb->propname, fspb->count,
(char *)&cfg[fspb->offset]);

1
arch/x86/include/asm/arch-apollolake/fsp_bindings.h
View File

@ -17,6 +17,7 @@ enum conf_type {
FSP_UINT8,
FSP_UINT16,
FSP_UINT32,
FSP_UINT64,
FSP_STRING,
FSP_LPDDR4_SWIZZLE,
};