From: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> To: U-Boot Mailing List <u-boot-0aAXYlwwYIKGBzrmiIFOJg@public.gmane.org> Cc: Tom Rini <trini-l0cyMroinI0@public.gmane.org>, Jerry Van Baren <vanbaren-He//nVnquyzQT0dZR+AlfA@public.gmane.org>, Devicetree Discuss <devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org>, Che-Liang Chiou <clchiou-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> Subject: [PATCH 08/14] fdt: Add fdtdec_get_uint64 to decode a 64-bit value from a property Date: Thu, 25 Oct 2012 19:31:05 -0700 [thread overview] Message-ID: <1351218671-15228-9-git-send-email-sjg@chromium.org> (raw) In-Reply-To: <1351218671-15228-1-git-send-email-sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> From: Che-Liang Chiou <clchiou-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> It decodes a 64-bit value from a property that is at least 8 bytes long. Signed-off-by: Che-Liang Chiou <clchiou-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> Signed-off-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> --- include/fdtdec.h | 15 +++++++++++++++ lib/fdtdec.c | 13 +++++++++++++ 2 files changed, 28 insertions(+), 0 deletions(-) diff --git a/include/fdtdec.h b/include/fdtdec.h index 82fdb99..12f73a7 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -191,6 +191,21 @@ s32 fdtdec_get_int(const void *blob, int node, const char *prop_name, s32 default_val); /** + * Look up a 64-bit integer property in a node and return it. The property + * must have at least 8 bytes of data (2 cells). The first two cells are + * concatenated to form a 8 bytes value, where the first cell is top half and + * the second cell is bottom half. + * + * @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 integer value, if found, or default_val if not + */ +uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name, + uint64_t default_val); + +/** * Checks whether a node is enabled. * This looks for a 'status' property. If this exists, then returns 1 if * the status is 'ok' and 0 otherwise. If there is no status property, diff --git a/lib/fdtdec.c b/lib/fdtdec.c index fbb2827..6c417d2 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -111,6 +111,19 @@ s32 fdtdec_get_int(const void *blob, int node, const char *prop_name, return default_val; } +uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name, + uint64_t default_val) +{ + const uint64_t *cell64; + int length; + + cell64 = fdt_getprop(blob, node, prop_name, &length); + if (!cell64 || length < sizeof(*cell64)) + return default_val; + + return fdt64_to_cpu(*cell64); +} + int fdtdec_get_is_enabled(const void *blob, int node) { const char *cell; -- 1.7.7.3
WARNING: multiple messages have this Message-ID (diff)
From: Simon Glass <sjg@chromium.org> To: u-boot@lists.denx.de Subject: [U-Boot] [PATCH 08/14] fdt: Add fdtdec_get_uint64 to decode a 64-bit value from a property Date: Thu, 25 Oct 2012 19:31:05 -0700 [thread overview] Message-ID: <1351218671-15228-9-git-send-email-sjg@chromium.org> (raw) In-Reply-To: <1351218671-15228-1-git-send-email-sjg@chromium.org> From: Che-Liang Chiou <clchiou@chromium.org> It decodes a 64-bit value from a property that is at least 8 bytes long. Signed-off-by: Che-Liang Chiou <clchiou@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> --- include/fdtdec.h | 15 +++++++++++++++ lib/fdtdec.c | 13 +++++++++++++ 2 files changed, 28 insertions(+), 0 deletions(-) diff --git a/include/fdtdec.h b/include/fdtdec.h index 82fdb99..12f73a7 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -191,6 +191,21 @@ s32 fdtdec_get_int(const void *blob, int node, const char *prop_name, s32 default_val); /** + * Look up a 64-bit integer property in a node and return it. The property + * must have at least 8 bytes of data (2 cells). The first two cells are + * concatenated to form a 8 bytes value, where the first cell is top half and + * the second cell is bottom half. + * + * @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 integer value, if found, or default_val if not + */ +uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name, + uint64_t default_val); + +/** * Checks whether a node is enabled. * This looks for a 'status' property. If this exists, then returns 1 if * the status is 'ok' and 0 otherwise. If there is no status property, diff --git a/lib/fdtdec.c b/lib/fdtdec.c index fbb2827..6c417d2 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -111,6 +111,19 @@ s32 fdtdec_get_int(const void *blob, int node, const char *prop_name, return default_val; } +uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name, + uint64_t default_val) +{ + const uint64_t *cell64; + int length; + + cell64 = fdt_getprop(blob, node, prop_name, &length); + if (!cell64 || length < sizeof(*cell64)) + return default_val; + + return fdt64_to_cpu(*cell64); +} + int fdtdec_get_is_enabled(const void *blob, int node) { const char *cell; -- 1.7.7.3
next prev parent reply other threads:[~2012-10-26 2:31 UTC|newest] Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-10-26 2:30 [PATCH 0/14] fdt: Add various device tree utilities and features Simon Glass 2012-10-26 2:30 ` [U-Boot] " Simon Glass [not found] ` <1351218671-15228-1-git-send-email-sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> 2012-10-26 2:30 ` [PATCH 01/14] fdt: Add function to get config int from device tree Simon Glass 2012-10-26 2:30 ` [U-Boot] " Simon Glass 2012-10-26 2:30 ` [PATCH 02/14] fdt: Add function to get a config string " Simon Glass 2012-10-26 2:30 ` [U-Boot] " Simon Glass 2012-10-26 2:31 ` [PATCH 03/14] fdt: Add fdtdec_decode_region() to decode memory region Simon Glass 2012-10-26 2:31 ` [U-Boot] " Simon Glass 2012-10-26 2:31 ` [PATCH 04/14] fdt: Add function for decoding multiple gpios globally available Simon Glass 2012-10-26 2:31 ` [U-Boot] " Simon Glass 2012-10-26 2:31 ` [PATCH 05/14] fdt: Export fdtdec_find_alias_node() function Simon Glass 2012-10-26 2:31 ` [U-Boot] " Simon Glass [not found] ` <1351218671-15228-6-git-send-email-sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> 2012-10-26 4:24 ` David Gibson 2012-10-26 4:24 ` [U-Boot] " David Gibson 2012-10-31 23:50 ` Simon Glass 2012-10-31 23:50 ` [U-Boot] " Simon Glass 2012-10-26 2:31 ` [PATCH 06/14] fdt: Export fdtdec_lookup() and fix the name Simon Glass 2012-10-26 2:31 ` [U-Boot] " Simon Glass 2012-10-26 2:31 ` [PATCH 07/14] fdt: Add function to read boolean property Simon Glass 2012-10-26 2:31 ` [U-Boot] " Simon Glass 2012-10-26 2:31 ` Simon Glass [this message] 2012-10-26 2:31 ` [U-Boot] [PATCH 08/14] fdt: Add fdtdec_get_uint64 to decode a 64-bit value from a property Simon Glass 2012-10-26 2:31 ` [PATCH 09/14] fdt: Add polarity-aware gpio functions to fdtdec Simon Glass 2012-10-26 2:31 ` [U-Boot] " Simon Glass 2012-10-26 7:17 ` Lucas Stach 2012-10-26 7:17 ` [U-Boot] " Lucas Stach 2012-10-31 23:59 ` Simon Glass 2012-10-31 23:59 ` [U-Boot] " Simon Glass 2012-11-01 4:50 ` Stephen Warren 2012-11-01 4:50 ` [U-Boot] " Stephen Warren 2012-11-15 23:31 ` Simon Glass 2012-11-15 23:31 ` [U-Boot] " Simon Glass 2012-11-15 23:46 ` Stephen Warren 2012-11-15 23:46 ` [U-Boot] " Stephen Warren 2012-11-16 0:01 ` Simon Glass 2012-11-16 0:01 ` [U-Boot] " Simon Glass 2012-10-26 2:31 ` [PATCH 11/14] fdt: Tell the FDT library where the device tree is Simon Glass 2012-10-26 2:31 ` [U-Boot] " Simon Glass 2012-10-26 2:31 ` [PATCH 12/14] fdt: Allow device tree to specify secure booting Simon Glass 2012-10-26 2:31 ` [U-Boot] " Simon Glass 2012-10-26 2:31 ` [PATCH 10/14] fdt: Load boot command from device tree Simon Glass 2012-10-26 2:31 ` [U-Boot] " Simon Glass 2012-10-26 2:31 ` [PATCH 13/14] fdt: Add option to default to most compatible conf in a fit image Simon Glass 2012-10-26 2:31 ` [U-Boot] " Simon Glass 2012-10-26 2:31 ` [PATCH 14/14] fdt: Set kernaddr if fdt indicates a kernel is present Simon Glass 2012-10-26 2:31 ` [U-Boot] " Simon Glass [not found] ` <1351218671-15228-15-git-send-email-sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> 2012-11-28 14:30 ` Dennis Lan (dlan) 2012-11-28 14:30 ` Dennis Lan 2012-11-28 15:16 ` Simon Glass 2012-11-18 1:35 ` [PATCH 0/14] fdt: Add various device tree utilities and features Jerry Van Baren 2012-11-18 1:35 ` [U-Boot] " Jerry Van Baren 2012-11-19 17:08 ` Simon Glass 2012-11-19 17:08 ` [U-Boot] " Simon Glass
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