| Message ID | 1379344808-26917-3-git-send-email-julien.grall@linaro.org |
|---|---|
| State | Superseded, archived |
| Headers | show |
On Mon, 2013-09-16 at 16:20 +0100, Julien Grall wrote: > Linux uses the property linux,initrd-start and linux,initrd-end to know where > the initrd lives in memory. > > Signed-off-by: Julien Grall <julien.grall@linaro.org> Acked-by: Ian Campbell <ian.campbell@citrix.com> > --- > xen/common/device_tree.c | 25 +++++++++++++++++++++++++ > 1 file changed, 25 insertions(+) > > diff --git a/xen/common/device_tree.c b/xen/common/device_tree.c > index 9a16650..906f9f9 100644 > --- a/xen/common/device_tree.c > +++ b/xen/common/device_tree.c > @@ -382,6 +382,29 @@ static void __init process_multiboot_node(const void *fdt, int node, > early_info.modules.nr_mods = nr; > } > > +static void __init process_chosen_node(const void *fdt, int node, > + const char *name, > + u32 address_cells, u32 size_cells) > +{ > + struct dt_mb_module *mod = &early_info.modules.module[MOD_INITRD]; > + u32 start, end; > + > + dt_printk("Checking for initrd in /chosen\n"); > + > + start = device_tree_get_u32(fdt, node, "linux,initrd-start", 0); > + end = device_tree_get_u32(fdt, node, "linux,initrd-end", 0); > + > + if ( !start || !end || (start >= end) ) > + return; > + > + dt_printk("Initrd 0x%x-0x%x\n", start, end); > + > + mod->start = start; > + mod->size = end - start; > + > + early_info.modules.nr_mods = MAX(MOD_INITRD, early_info.modules.nr_mods); > +} > + > static int __init early_scan_node(const void *fdt, > int node, const char *name, int depth, > u32 address_cells, u32 size_cells, > @@ -391,6 +414,8 @@ static int __init early_scan_node(const void *fdt, > process_memory_node(fdt, node, name, address_cells, size_cells); > else if ( device_tree_node_compatible(fdt, node, "xen,multiboot-module" ) ) > process_multiboot_node(fdt, node, name, address_cells, size_cells); > + else if ( depth == 1 && device_tree_node_matches(fdt, node, "chosen") ) > + process_chosen_node(fdt, node, name, address_cells, size_cells); > > return 0; > }
diff --git a/xen/common/device_tree.c b/xen/common/device_tree.c index 9a16650..906f9f9 100644 --- a/xen/common/device_tree.c +++ b/xen/common/device_tree.c @@ -382,6 +382,29 @@ static void __init process_multiboot_node(const void *fdt, int node, early_info.modules.nr_mods = nr; } +static void __init process_chosen_node(const void *fdt, int node, + const char *name, + u32 address_cells, u32 size_cells) +{ + struct dt_mb_module *mod = &early_info.modules.module[MOD_INITRD]; + u32 start, end; + + dt_printk("Checking for initrd in /chosen\n"); + + start = device_tree_get_u32(fdt, node, "linux,initrd-start", 0); + end = device_tree_get_u32(fdt, node, "linux,initrd-end", 0); + + if ( !start || !end || (start >= end) ) + return; + + dt_printk("Initrd 0x%x-0x%x\n", start, end); + + mod->start = start; + mod->size = end - start; + + early_info.modules.nr_mods = MAX(MOD_INITRD, early_info.modules.nr_mods); +} + static int __init early_scan_node(const void *fdt, int node, const char *name, int depth, u32 address_cells, u32 size_cells, @@ -391,6 +414,8 @@ static int __init early_scan_node(const void *fdt, process_memory_node(fdt, node, name, address_cells, size_cells); else if ( device_tree_node_compatible(fdt, node, "xen,multiboot-module" ) ) process_multiboot_node(fdt, node, name, address_cells, size_cells); + else if ( depth == 1 && device_tree_node_matches(fdt, node, "chosen") ) + process_chosen_node(fdt, node, name, address_cells, size_cells); return 0; }
Linux uses the property linux,initrd-start and linux,initrd-end to know where the initrd lives in memory. Signed-off-by: Julien Grall <julien.grall@linaro.org> --- xen/common/device_tree.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+)