On Thu, Nov 18, 2010 at 03:55:00PM -0800, Stephen Neuendorffer wrote:
> unflatten_dt_node is a helper function that does most of the work to
> convert a device tree blob into tree of device nodes. This code
> now uses a passed-in blob instead of using the single boot-time blob,
> allowing it to be called in more contexts.
>
> Signed-off-by: Stephen Neuendorffer <[email protected]>
Merged, thanks.
g.
>
> ---
>
> V2: don't reorder
> blob argument first.
> ---
> drivers/of/fdt.c | 27 ++++++++++++++++-----------
> 1 files changed, 16 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
> index 190e26c..a07fd1a 100644
> --- a/drivers/of/fdt.c
> +++ b/drivers/of/fdt.c
> @@ -206,7 +206,7 @@ int __init of_flat_dt_is_compatible(unsigned long node,
> const char *compat)
> return of_fdt_is_compatible(initial_boot_params, node, compat);
> }
>
> -static void *__init unflatten_dt_alloc(unsigned long *mem, unsigned long
> size,
> +static void *unflatten_dt_alloc(unsigned long *mem, unsigned long size,
> unsigned long align)
> {
> void *res;
> @@ -220,16 +220,18 @@ static void *__init unflatten_dt_alloc(unsigned long
> *mem, unsigned long size,
>
> /**
> * unflatten_dt_node - Alloc and populate a device_node from the flat tree
> + * @blob: The parent device tree blob
> * @p: pointer to node in flat tree
> * @dad: Parent struct device_node
> * @allnextpp: pointer to ->allnext from last allocated device_node
> * @fpsize: Size of the node path up at the current depth.
> */
> -unsigned long __init unflatten_dt_node(unsigned long mem,
> - unsigned long *p,
> - struct device_node *dad,
> - struct device_node ***allnextpp,
> - unsigned long fpsize)
> +unsigned long unflatten_dt_node(struct boot_param_header *blob,
> + unsigned long mem,
> + unsigned long *p,
> + struct device_node *dad,
> + struct device_node ***allnextpp,
> + unsigned long fpsize)
> {
> struct device_node *np;
> struct property *pp, **prev_pp = NULL;
> @@ -325,10 +327,10 @@ unsigned long __init unflatten_dt_node(unsigned long
> mem,
> sz = be32_to_cpup((__be32 *)(*p));
> noff = be32_to_cpup((__be32 *)((*p) + 4));
> *p += 8;
> - if (be32_to_cpu(initial_boot_params->version) < 0x10)
> + if (be32_to_cpu(blob->version) < 0x10)
> *p = ALIGN(*p, sz >= 8 ? 8 : 4);
>
> - pname = of_fdt_get_string(initial_boot_params, noff);
> + pname = of_fdt_get_string(blob, noff);
> if (pname == NULL) {
> pr_info("Can't find property name in list !\n");
> break;
> @@ -407,7 +409,8 @@ unsigned long __init unflatten_dt_node(unsigned long mem,
> if (tag == OF_DT_NOP)
> *p += 4;
> else
> - mem = unflatten_dt_node(mem, p, np, allnextpp, fpsize);
> + mem = unflatten_dt_node(blob, mem, p, np, allnextpp,
> + fpsize);
> tag = be32_to_cpup((__be32 *)(*p));
> }
> if (tag != OF_DT_END_NODE) {
> @@ -599,7 +602,8 @@ void __init unflatten_device_tree(void)
> /* First pass, scan for size */
> start = ((unsigned long)initial_boot_params) +
> be32_to_cpu(initial_boot_params->off_dt_struct);
> - size = unflatten_dt_node(0, &start, NULL, NULL, 0);
> + size = unflatten_dt_node(initial_boot_params, 0, &start,
> + NULL, NULL, 0);
> size = (size | 3) + 1;
>
> pr_debug(" size is %lx, allocating...\n", size);
> @@ -616,7 +620,8 @@ void __init unflatten_device_tree(void)
> /* Second pass, do actual unflattening */
> start = ((unsigned long)initial_boot_params) +
> be32_to_cpu(initial_boot_params->off_dt_struct);
> - unflatten_dt_node(mem, &start, NULL, &allnextp, 0);
> + unflatten_dt_node(initial_boot_params, mem, &start,
> + NULL, &allnextp, 0);
> if (be32_to_cpup((__be32 *)start) != OF_DT_END)
> pr_warning("Weird tag at end of tree: %08x\n", *((u32 *)start));
> if (be32_to_cpu(((__be32 *)mem)[size / 4]) != 0xdeadbeef)
> --
> 1.5.6.6
>
>
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