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-rw-r--r--arch/powerpc/kernel/prom.c130
1 files changed, 66 insertions, 64 deletions
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 1c14cd4a5e0..fa0ad8aafbc 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -215,16 +215,16 @@ static void __init check_cpu_pa_features(unsigned long node)
#ifdef CONFIG_PPC_STD_MMU_64
static void __init check_cpu_slb_size(unsigned long node)
{
- u32 *slb_size_ptr;
+ __be32 *slb_size_ptr;
slb_size_ptr = of_get_flat_dt_prop(node, "slb-size", NULL);
if (slb_size_ptr != NULL) {
- mmu_slb_size = *slb_size_ptr;
+ mmu_slb_size = be32_to_cpup(slb_size_ptr);
return;
}
slb_size_ptr = of_get_flat_dt_prop(node, "ibm,slb-size", NULL);
if (slb_size_ptr != NULL) {
- mmu_slb_size = *slb_size_ptr;
+ mmu_slb_size = be32_to_cpup(slb_size_ptr);
}
}
#else
@@ -279,11 +279,11 @@ static void __init check_cpu_feature_properties(unsigned long node)
{
unsigned long i;
struct feature_property *fp = feature_properties;
- const u32 *prop;
+ const __be32 *prop;
for (i = 0; i < ARRAY_SIZE(feature_properties); ++i, ++fp) {
prop = of_get_flat_dt_prop(node, fp->name, NULL);
- if (prop && *prop >= fp->min_value) {
+ if (prop && be32_to_cpup(prop) >= fp->min_value) {
cur_cpu_spec->cpu_features |= fp->cpu_feature;
cur_cpu_spec->cpu_user_features |= fp->cpu_user_ftr;
}
@@ -295,8 +295,8 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
void *data)
{
char *type = of_get_flat_dt_prop(node, "device_type", NULL);
- const u32 *prop;
- const u32 *intserv;
+ const __be32 *prop;
+ const __be32 *intserv;
int i, nthreads;
unsigned long len;
int found = -1;
@@ -324,8 +324,9 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
* version 2 of the kexec param format adds the phys cpuid of
* booted proc.
*/
- if (initial_boot_params->version >= 2) {
- if (intserv[i] == initial_boot_params->boot_cpuid_phys) {
+ if (be32_to_cpu(initial_boot_params->version) >= 2) {
+ if (be32_to_cpu(intserv[i]) ==
+ be32_to_cpu(initial_boot_params->boot_cpuid_phys)) {
found = boot_cpu_count;
found_thread = i;
}
@@ -347,9 +348,10 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
if (found >= 0) {
DBG("boot cpu: logical %d physical %d\n", found,
- intserv[found_thread]);
+ be32_to_cpu(intserv[found_thread]));
boot_cpuid = found;
- set_hard_smp_processor_id(found, intserv[found_thread]);
+ set_hard_smp_processor_id(found,
+ be32_to_cpu(intserv[found_thread]));
/*
* PAPR defines "logical" PVR values for cpus that
@@ -366,8 +368,8 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
* it uses 0x0f000001.
*/
prop = of_get_flat_dt_prop(node, "cpu-version", NULL);
- if (prop && (*prop & 0xff000000) == 0x0f000000)
- identify_cpu(0, *prop);
+ if (prop && (be32_to_cpup(prop) & 0xff000000) == 0x0f000000)
+ identify_cpu(0, be32_to_cpup(prop));
identical_pvr_fixup(node);
}
@@ -389,7 +391,7 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
int __init early_init_dt_scan_chosen_ppc(unsigned long node, const char *uname,
int depth, void *data)
{
- unsigned long *lprop;
+ unsigned long *lprop; /* All these set by kernel, so no need to convert endian */
/* Use common scan routine to determine if this is the chosen node */
if (early_init_dt_scan_chosen(node, uname, depth, data) == 0)
@@ -454,7 +456,7 @@ static int __init early_init_dt_scan_drconf_memory(unsigned long node)
if (dm == NULL || l < sizeof(__be32))
return 0;
- n = *dm++; /* number of entries */
+ n = of_read_number(dm++, 1); /* number of entries */
if (l < (n * (dt_root_addr_cells + 4) + 1) * sizeof(__be32))
return 0;
@@ -466,7 +468,7 @@ static int __init early_init_dt_scan_drconf_memory(unsigned long node)
for (; n != 0; --n) {
base = dt_mem_next_cell(dt_root_addr_cells, &dm);
- flags = dm[3];
+ flags = of_read_number(&dm[3], 1);
/* skip DRC index, pad, assoc. list index, flags */
dm += 4;
/* skip this block if the reserved bit is set in flags (0x80)
@@ -544,21 +546,6 @@ void __init early_init_dt_add_memory_arch(u64 base, u64 size)
memblock_add(base, size);
}
-void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
-{
- return __va(memblock_alloc(size, align));
-}
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void __init early_init_dt_setup_initrd_arch(unsigned long start,
- unsigned long end)
-{
- initrd_start = (unsigned long)__va(start);
- initrd_end = (unsigned long)__va(end);
- initrd_below_start_ok = 1;
-}
-#endif
-
static void __init early_reserve_mem_dt(void)
{
unsigned long i, len, dt_root;
@@ -591,16 +578,16 @@ static void __init early_reserve_mem_dt(void)
static void __init early_reserve_mem(void)
{
u64 base, size;
- u64 *reserve_map;
+ __be64 *reserve_map;
unsigned long self_base;
unsigned long self_size;
- reserve_map = (u64 *)(((unsigned long)initial_boot_params) +
- initial_boot_params->off_mem_rsvmap);
+ reserve_map = (__be64 *)(((unsigned long)initial_boot_params) +
+ be32_to_cpu(initial_boot_params->off_mem_rsvmap));
/* before we do anything, lets reserve the dt blob */
self_base = __pa((unsigned long)initial_boot_params);
- self_size = initial_boot_params->totalsize;
+ self_size = be32_to_cpu(initial_boot_params->totalsize);
memblock_reserve(self_base, self_size);
/* Look for the new "reserved-regions" property in the DT */
@@ -620,15 +607,15 @@ static void __init early_reserve_mem(void)
* Handle the case where we might be booting from an old kexec
* image that setup the mem_rsvmap as pairs of 32-bit values
*/
- if (*reserve_map > 0xffffffffull) {
+ if (be64_to_cpup(reserve_map) > 0xffffffffull) {
u32 base_32, size_32;
- u32 *reserve_map_32 = (u32 *)reserve_map;
+ __be32 *reserve_map_32 = (__be32 *)reserve_map;
DBG("Found old 32-bit reserve map\n");
while (1) {
- base_32 = *(reserve_map_32++);
- size_32 = *(reserve_map_32++);
+ base_32 = be32_to_cpup(reserve_map_32++);
+ size_32 = be32_to_cpup(reserve_map_32++);
if (size_32 == 0)
break;
/* skip if the reservation is for the blob */
@@ -644,8 +631,8 @@ static void __init early_reserve_mem(void)
/* Handle the reserve map in the fdt blob if it exists */
while (1) {
- base = *(reserve_map++);
- size = *(reserve_map++);
+ base = be64_to_cpup(reserve_map++);
+ size = be64_to_cpup(reserve_map++);
if (size == 0)
break;
DBG("reserving: %llx -> %llx\n", base, size);
@@ -765,35 +752,50 @@ void __init early_init_devtree(void *params)
*******/
/**
- * of_find_next_cache_node - Find a node's subsidiary cache
- * @np: node of type "cpu" or "cache"
+ * of_get_ibm_chip_id - Returns the IBM "chip-id" of a device
+ * @np: device node of the device
*
- * Returns a node pointer with refcount incremented, use
- * of_node_put() on it when done. Caller should hold a reference
- * to np.
+ * This looks for a property "ibm,chip-id" in the node or any
+ * of its parents and returns its content, or -1 if it cannot
+ * be found.
*/
-struct device_node *of_find_next_cache_node(struct device_node *np)
+int of_get_ibm_chip_id(struct device_node *np)
{
- struct device_node *child;
- const phandle *handle;
-
- handle = of_get_property(np, "l2-cache", NULL);
- if (!handle)
- handle = of_get_property(np, "next-level-cache", NULL);
+ of_node_get(np);
+ while(np) {
+ struct device_node *old = np;
+ const __be32 *prop;
+
+ prop = of_get_property(np, "ibm,chip-id", NULL);
+ if (prop) {
+ of_node_put(np);
+ return be32_to_cpup(prop);
+ }
+ np = of_get_parent(np);
+ of_node_put(old);
+ }
+ return -1;
+}
- if (handle)
- return of_find_node_by_phandle(*handle);
+/**
+ * cpu_to_chip_id - Return the cpus chip-id
+ * @cpu: The logical cpu number.
+ *
+ * Return the value of the ibm,chip-id property corresponding to the given
+ * logical cpu number. If the chip-id can not be found, returns -1.
+ */
+int cpu_to_chip_id(int cpu)
+{
+ struct device_node *np;
- /* OF on pmac has nodes instead of properties named "l2-cache"
- * beneath CPU nodes.
- */
- if (!strcmp(np->type, "cpu"))
- for_each_child_of_node(np, child)
- if (!strcmp(child->type, "cache"))
- return child;
+ np = of_get_cpu_node(cpu, NULL);
+ if (!np)
+ return -1;
- return NULL;
+ of_node_put(np);
+ return of_get_ibm_chip_id(np);
}
+EXPORT_SYMBOL(cpu_to_chip_id);
#ifdef CONFIG_PPC_PSERIES
/*
@@ -878,7 +880,7 @@ static int __init export_flat_device_tree(void)
struct dentry *d;
flat_dt_blob.data = initial_boot_params;
- flat_dt_blob.size = initial_boot_params->totalsize;
+ flat_dt_blob.size = be32_to_cpu(initial_boot_params->totalsize);
d = debugfs_create_blob("flat-device-tree", S_IFREG | S_IRUSR,
powerpc_debugfs_root, &flat_dt_blob);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-29 12:16:41 +0000