From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Vrabel Subject: [PATCH 06/11] device tree: add device_tree_dump() to print a flat device tree Date: Mon, 19 Mar 2012 17:52:04 +0000 Message-ID: <1332179529-1828-7-git-send-email-david.vrabel@citrix.com> References: <1332179529-1828-1-git-send-email-david.vrabel@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1332179529-1828-1-git-send-email-david.vrabel@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xensource.com Cc: Ian Campbell , David Vrabel List-Id: xen-devel@lists.xenproject.org From: David Vrabel Add a device_tree_dump() function which prints to main structure and properties names of a flat device tree (but not the properties values yet). This will be useful for debugging problems with the device tree generated for dom0. Signed-off-by: David Vrabel Acked-by: Ian Campbell --- xen/common/device_tree.c | 38 ++++++++++++++++++++++++++++++++++++++ xen/include/xen/device_tree.h | 1 + 2 files changed, 39 insertions(+), 0 deletions(-) diff --git a/xen/common/device_tree.c b/xen/common/device_tree.c index 8f5d899..d4b1556 100644 --- a/xen/common/device_tree.c +++ b/xen/common/device_tree.c @@ -103,6 +103,44 @@ int device_tree_for_each_node(const void *fdt, return 0; } +static int dump_node(const void *fdt, int node, const char *name, int depth, + u32 address_cells, u32 size_cells, void *data) +{ + char prefix[2*MAX_DEPTH + 1] = ""; + int i; + int prop; + + for ( i = 0; i < depth; i++ ) + safe_strcat(prefix, " "); + + if ( name[0] == '\0' ) + name = "/"; + printk("%s%s:\n", prefix, name); + + for ( prop = fdt_first_property_offset(fdt, node); + prop >= 0; + prop = fdt_next_property_offset(fdt, prop) ) + { + const struct fdt_property *p; + + p = fdt_get_property_by_offset(fdt, prop, NULL); + + printk("%s %s\n", prefix, fdt_string(fdt, fdt32_to_cpu(p->nameoff))); + } + + return 0; +} + +/** + * device_tree_dump - print a text representation of a device tree + * @fdt: flat device tree to print + */ +void device_tree_dump(const void *fdt) +{ + device_tree_for_each_node(fdt, dump_node, NULL); +} + + static void __init process_memory_node(const void *fdt, int node, const char *name, u32 address_cells, u32 size_cells) diff --git a/xen/include/xen/device_tree.h b/xen/include/xen/device_tree.h index 505f3e3..b91b39f 100644 --- a/xen/include/xen/device_tree.h +++ b/xen/include/xen/device_tree.h @@ -41,5 +41,6 @@ paddr_t device_tree_get_xen_paddr(void); int device_tree_for_each_node(const void *fdt, device_tree_node_func func, void *data); +void device_tree_dump(const void *fdt); #endif -- 1.7.2.5