From 3b86e60182b87a96f2e5e2236df7a877c9a8c468 Mon Sep 17 00:00:00 2001
From: Chin Liang See clsee@altera.com Date: Thu, 15 Oct 2015 14:04:39 +0800 Subject: [PATCH v4 5/5] lib, fdt: Adding fdtdec_get_u32 function
Adding fdtdec_get_u32 function which is the unsigned version for fdtdec_get_int
Signed-off-by: Chin Liang See clsee@altera.com Cc: Dinh Nguyen dinguyen@opensource.altera.com Cc: Dinh Nguyen dinh.linux@gmail.com Cc: Marek Vasut marex@denx.de Cc: Stefan Roese sr@denx.de Cc: Vikas Manocha vikas.manocha@st.com Cc: Jagannadh Teki jteki@openedev.com Cc: Pavel Machek pavel@denx.de Cc: Heiko Schocher hs@denx.de --- Changes for v4 - Drop idea on enabling fdt_support in SPL build --- include/fdtdec.h | 13 +++++++++++++ lib/fdtdec_common.c | 18 ++++++++++++++++++ 2 files changed, 31 insertions(+)
diff --git a/include/fdtdec.h b/include/fdtdec.h index 2de6dda..d51e643 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -490,6 +490,19 @@ s32 fdtdec_get_int(const void *blob, int node, const char *prop_name, s32 default_val);
/** + * Unsigned version of fdtdec_get_int. The property must have at least + * 4 bytes of data. The value of the first cell is returned. + * + * @param blob FDT blob + * @param node node to examine + * @param prop_name name of property to find + * @param default_val default value to return if the property is not found + * @return unsigned integer value, if found, or default_val if not + */ +unsigned int fdtdec_get_uint(const void *blob, int node, const char *prop_name, + unsigned int default_val); + +/** * Get a variable-sized number from a property * * This reads a number from one or more cells. diff --git a/lib/fdtdec_common.c b/lib/fdtdec_common.c index 757931a..63b704a 100644 --- a/lib/fdtdec_common.c +++ b/lib/fdtdec_common.c @@ -36,3 +36,21 @@ int fdtdec_get_int(const void *blob, int node, const char *prop_name, debug("(not found)\n"); return default_val; } + +unsigned int fdtdec_get_uint(const void *blob, int node, const char *prop_name, + unsigned int default_val) +{ + const int *cell; + int len; + + debug("%s: %s: ", __func__, prop_name); + cell = fdt_getprop(blob, node, prop_name, &len); + if (cell && len >= sizeof(unsigned int)) { + unsigned int val = fdt32_to_cpu(cell[0]); + + debug("%#x (%d)\n", val, val); + return val; + } + debug("(not found)\n"); + return default_val; +}