summaryrefslogtreecommitdiffstats
path: root/arch/blackfin/kernel/module.c
diff options
context:
space:
mode:
authorSonic Zhang <sonic.zhang@analog.com>2008-07-19 15:42:41 +0800
committerBryan Wu <cooloney@kernel.org>2008-07-19 15:42:41 +0800
commit262c3825a9f3eb0f4f30ebb4b1ee57397bcb3ffc (patch)
treefb5402f0de002d3e7a6671820228a2b9808d831f /arch/blackfin/kernel/module.c
parentbafcc1b97323261a42d47960db99947bcc1be133 (diff)
Blackfin arch: Extend sram malloc to handle L2 SRAM.
Extend system call to alloc L2 SRAM in application. Automatically move following sections to L2 SRAM: 1. kernel built-in l2 attribute section 2. kernel module l2 attribute section 3. elf-fdpic application l2 attribute section Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin/kernel/module.c')
-rw-r--r--arch/blackfin/kernel/module.c74
1 files changed, 59 insertions, 15 deletions
diff --git a/arch/blackfin/kernel/module.c b/arch/blackfin/kernel/module.c
index 14a42848f37..e1bebc80a5b 100644
--- a/arch/blackfin/kernel/module.c
+++ b/arch/blackfin/kernel/module.c
@@ -173,7 +173,7 @@ module_frob_arch_sections(Elf_Ehdr * hdr, Elf_Shdr * sechdrs,
for (s = sechdrs; s < sechdrs_end; ++s) {
if ((strcmp(".l1.text", secstrings + s->sh_name) == 0) ||
((strcmp(".text", secstrings + s->sh_name) == 0) &&
- (hdr->e_flags & FLG_CODE_IN_L1) && (s->sh_size > 0))) {
+ (hdr->e_flags & EF_BFIN_CODE_IN_L1) && (s->sh_size > 0))) {
dest = l1_inst_sram_alloc(s->sh_size);
mod->arch.text_l1 = dest;
if (dest == NULL) {
@@ -188,7 +188,7 @@ module_frob_arch_sections(Elf_Ehdr * hdr, Elf_Shdr * sechdrs,
}
if ((strcmp(".l1.data", secstrings + s->sh_name) == 0) ||
((strcmp(".data", secstrings + s->sh_name) == 0) &&
- (hdr->e_flags & FLG_DATA_IN_L1) && (s->sh_size > 0))) {
+ (hdr->e_flags & EF_BFIN_DATA_IN_L1) && (s->sh_size > 0))) {
dest = l1_data_sram_alloc(s->sh_size);
mod->arch.data_a_l1 = dest;
if (dest == NULL) {
@@ -203,7 +203,7 @@ module_frob_arch_sections(Elf_Ehdr * hdr, Elf_Shdr * sechdrs,
}
if (strcmp(".l1.bss", secstrings + s->sh_name) == 0 ||
((strcmp(".bss", secstrings + s->sh_name) == 0) &&
- (hdr->e_flags & FLG_DATA_IN_L1) && (s->sh_size > 0))) {
+ (hdr->e_flags & EF_BFIN_DATA_IN_L1) && (s->sh_size > 0))) {
dest = l1_data_sram_alloc(s->sh_size);
mod->arch.bss_a_l1 = dest;
if (dest == NULL) {
@@ -242,6 +242,51 @@ module_frob_arch_sections(Elf_Ehdr * hdr, Elf_Shdr * sechdrs,
s->sh_flags &= ~SHF_ALLOC;
s->sh_addr = (unsigned long)dest;
}
+ if ((strcmp(".l2.text", secstrings + s->sh_name) == 0) ||
+ ((strcmp(".text", secstrings + s->sh_name) == 0) &&
+ (hdr->e_flags & EF_BFIN_CODE_IN_L2) && (s->sh_size > 0))) {
+ dest = l2_sram_alloc(s->sh_size);
+ mod->arch.text_l2 = dest;
+ if (dest == NULL) {
+ printk(KERN_ERR
+ "module %s: L2 SRAM allocation failed\n",
+ mod->name);
+ return -1;
+ }
+ memcpy(dest, (void *)s->sh_addr, s->sh_size);
+ s->sh_flags &= ~SHF_ALLOC;
+ s->sh_addr = (unsigned long)dest;
+ }
+ if ((strcmp(".l2.data", secstrings + s->sh_name) == 0) ||
+ ((strcmp(".data", secstrings + s->sh_name) == 0) &&
+ (hdr->e_flags & EF_BFIN_DATA_IN_L2) && (s->sh_size > 0))) {
+ dest = l2_sram_alloc(s->sh_size);
+ mod->arch.data_l2 = dest;
+ if (dest == NULL) {
+ printk(KERN_ERR
+ "module %s: L2 SRAM allocation failed\n",
+ mod->name);
+ return -1;
+ }
+ memcpy(dest, (void *)s->sh_addr, s->sh_size);
+ s->sh_flags &= ~SHF_ALLOC;
+ s->sh_addr = (unsigned long)dest;
+ }
+ if (strcmp(".l2.bss", secstrings + s->sh_name) == 0 ||
+ ((strcmp(".bss", secstrings + s->sh_name) == 0) &&
+ (hdr->e_flags & EF_BFIN_DATA_IN_L2) && (s->sh_size > 0))) {
+ dest = l2_sram_alloc(s->sh_size);
+ mod->arch.bss_l2 = dest;
+ if (dest == NULL) {
+ printk(KERN_ERR
+ "module %s: L2 SRAM allocation failed\n",
+ mod->name);
+ return -1;
+ }
+ memset(dest, 0, s->sh_size);
+ s->sh_flags &= ~SHF_ALLOC;
+ s->sh_addr = (unsigned long)dest;
+ }
}
return 0;
}
@@ -411,9 +456,10 @@ module_finalize(const Elf_Ehdr * hdr,
continue;
if ((sechdrs[i].sh_type == SHT_RELA) &&
- ((strcmp(".rela.l1.text", secstrings + sechdrs[i].sh_name) == 0) ||
+ ((strcmp(".rela.l2.text", secstrings + sechdrs[i].sh_name) == 0) ||
+ (strcmp(".rela.l1.text", secstrings + sechdrs[i].sh_name) == 0) ||
((strcmp(".rela.text", secstrings + sechdrs[i].sh_name) == 0) &&
- (hdr->e_flags & FLG_CODE_IN_L1)))) {
+ (hdr->e_flags & (EF_BFIN_CODE_IN_L1|EF_BFIN_CODE_IN_L2))))) {
apply_relocate_add((Elf_Shdr *) sechdrs, strtab,
symindex, i, mod);
}
@@ -423,14 +469,12 @@ module_finalize(const Elf_Ehdr * hdr,
void module_arch_cleanup(struct module *mod)
{
- if (mod->arch.text_l1)
- l1_inst_sram_free((void *)mod->arch.text_l1);
- if (mod->arch.data_a_l1)
- l1_data_sram_free((void *)mod->arch.data_a_l1);
- if (mod->arch.bss_a_l1)
- l1_data_sram_free((void *)mod->arch.bss_a_l1);
- if (mod->arch.data_b_l1)
- l1_data_B_sram_free((void *)mod->arch.data_b_l1);
- if (mod->arch.bss_b_l1)
- l1_data_B_sram_free((void *)mod->arch.bss_b_l1);
+ l1_inst_sram_free(mod->arch.text_l1);
+ l1_data_A_sram_free(mod->arch.data_a_l1);
+ l1_data_A_sram_free(mod->arch.bss_a_l1);
+ l1_data_B_sram_free(mod->arch.data_b_l1);
+ l1_data_B_sram_free(mod->arch.bss_b_l1);
+ l2_sram_free(mod->arch.text_l2);
+ l2_sram_free(mod->arch.data_l2);
+ l2_sram_free(mod->arch.bss_l2);
}