From 858e5a1a8be0380ecdb66eb7e44a99db459bc10e Mon Sep 17 00:00:00 2001 From: Bernhard Messerklinger Date: Wed, 22 Jul 2020 09:29:38 +0200 Subject: [PATCH] x86: apl: fsp_bindings: Add support for u64 parameters Add FSP_UINT64 read support as preparation for FSP-M and FSP-S parameter update. Signed-off-by: Bernhard Messerklinger Reviewed-by: Simon Glass --- arch/x86/cpu/apollolake/fsp_bindings.c | 28 ++++++++++++++++++++++ .../x86/include/asm/arch-apollolake/fsp_bindings.h | 1 + 2 files changed, 29 insertions(+) diff --git a/arch/x86/cpu/apollolake/fsp_bindings.c b/arch/x86/cpu/apollolake/fsp_bindings.c index 9130af9..130366b 100644 --- a/arch/x86/cpu/apollolake/fsp_bindings.c +++ b/arch/x86/cpu/apollolake/fsp_bindings.c @@ -90,6 +90,28 @@ static void read_u32_prop(ofnode node, char *name, size_t count, u32 *dst) } /** + * 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 * @name: Name of the property to read 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]); diff --git a/arch/x86/include/asm/arch-apollolake/fsp_bindings.h b/arch/x86/include/asm/arch-apollolake/fsp_bindings.h index b493951..a80e66b 100644 --- a/arch/x86/include/asm/arch-apollolake/fsp_bindings.h +++ b/arch/x86/include/asm/arch-apollolake/fsp_bindings.h @@ -17,6 +17,7 @@ enum conf_type { FSP_UINT8, FSP_UINT16, FSP_UINT32, + FSP_UINT64, FSP_STRING, FSP_LPDDR4_SWIZZLE, }; -- 2.7.4