diff options
| author | Len Brown <len.brown@intel.com> | 2008-10-23 07:57:26 +0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2008-10-23 08:11:07 +0400 |
| commit | 057316cc6a5b521b332a1d7ccc871cd60c904c74 (patch) | |
| tree | 4333e608da237c73ff69b10878025cca96dcb4c8 /arch/blackfin/mach-common/head.S | |
| parent | 3e2dab9a1c2deb03c311eb3f83466009147ed4d3 (diff) | |
| parent | 2515ddc6db8eb49a79f0fe5e67ff09ac7c81eab4 (diff) | |
| download | linux-057316cc6a5b521b332a1d7ccc871cd60c904c74.tar.xz | |
Merge branch 'linus' into test
Conflicts:
MAINTAINERS
arch/x86/kernel/acpi/boot.c
arch/x86/kernel/acpi/sleep.c
drivers/acpi/Kconfig
drivers/pnp/Makefile
drivers/pnp/quirks.c
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'arch/blackfin/mach-common/head.S')
| -rw-r--r-- | arch/blackfin/mach-common/head.S | 106 |
1 files changed, 102 insertions, 4 deletions
diff --git a/arch/blackfin/mach-common/head.S b/arch/blackfin/mach-common/head.S index 191b4e974c4b..f123a62e2451 100644 --- a/arch/blackfin/mach-common/head.S +++ b/arch/blackfin/mach-common/head.S @@ -68,6 +68,16 @@ ENTRY(__start) M2 = r0; M3 = r0; + /* + * Clear ITEST_COMMAND and DTEST_COMMAND registers, + * Leaving these as non-zero can confuse the emulator + */ + p0.L = LO(DTEST_COMMAND); + p0.H = HI(DTEST_COMMAND); + [p0] = R0; + [p0 + (ITEST_COMMAND - DTEST_COMMAND)] = R0; + CSYNC; + trace_buffer_init(p0,r0); P0 = R1; R0 = R1; @@ -90,12 +100,46 @@ ENTRY(__start) [p0] = R0; SSYNC; - /* Save RETX, in case of doublefault */ - p0.l = ___retx; - p0.h = ___retx; + /* in case of double faults, save a few things */ + p0.l = _init_retx; + p0.h = _init_retx; R0 = RETX; [P0] = R0; +#ifdef CONFIG_DEBUG_DOUBLEFAULT + /* Only save these if we are storing them, + * This happens here, since L1 gets clobbered + * below + */ + p0.l = _saved_retx; + p0.h = _saved_retx; + p1.l = _init_saved_retx; + p1.h = _init_saved_retx; + r0 = [p0]; + [p1] = r0; + + p0.l = _saved_dcplb_fault_addr; + p0.h = _saved_dcplb_fault_addr; + p1.l = _init_saved_dcplb_fault_addr; + p1.h = _init_saved_dcplb_fault_addr; + r0 = [p0]; + [p1] = r0; + + p0.l = _saved_icplb_fault_addr; + p0.h = _saved_icplb_fault_addr; + p1.l = _init_saved_icplb_fault_addr; + p1.h = _init_saved_icplb_fault_addr; + r0 = [p0]; + [p1] = r0; + + p0.l = _saved_seqstat; + p0.h = _saved_seqstat; + p1.l = _init_saved_seqstat; + p1.h = _init_saved_seqstat; + r0 = [p0]; + [p1] = r0; +#endif + /* Initialize stack pointer */ sp.l = lo(INITIAL_STACK); sp.h = hi(INITIAL_STACK); @@ -107,7 +151,7 @@ ENTRY(__start) #endif /* Put The Code for PLL Programming and SDRAM Programming in L1 ISRAM */ - call _bf53x_relocate_l1_mem; + call _bfin_relocate_l1_mem; #ifdef CONFIG_BFIN_KERNEL_CLOCK call _start_dma_code; #endif @@ -162,6 +206,60 @@ ENTRY(_real_start) w[p0] = r0; ssync; +#if L1_DATA_A_LENGTH > 0 + r1.l = __sbss_l1; + r1.h = __sbss_l1; + r2.l = __ebss_l1; + r2.h = __ebss_l1; + r0 = 0 (z); + r2 = r2 - r1; + cc = r2 == 0; + if cc jump .L_a_l1_done; + r2 >>= 2; + p1 = r1; + p2 = r2; + lsetup (.L_clear_a_l1, .L_clear_a_l1 ) lc0 = p2; +.L_clear_a_l1: + [p1++] = r0; +.L_a_l1_done: +#endif + +#if L1_DATA_B_LENGTH > 0 + r1.l = __sbss_b_l1; + r1.h = __sbss_b_l1; + r2.l = __ebss_b_l1; + r2.h = __ebss_b_l1; + r0 = 0 (z); + r2 = r2 - r1; + cc = r2 == 0; + if cc jump .L_b_l1_done; + r2 >>= 2; + p1 = r1; + p2 = r2; + lsetup (.L_clear_b_l1, .L_clear_b_l1 ) lc0 = p2; +.L_clear_b_l1: + [p1++] = r0; +.L_b_l1_done: +#endif + +#if L2_LENGTH > 0 + r1.l = __sbss_l2; + r1.h = __sbss_l2; + r2.l = __ebss_l2; + r2.h = __ebss_l2; + r0 = 0 (z); + r2 = r2 - r1; + cc = r2 == 0; + if cc jump .L_l2_done; + r2 >>= 2; + p1 = r1; + p2 = r2; + lsetup (.L_clear_l2, .L_clear_l2 ) lc0 = p2; +.L_clear_l2: + [p1++] = r0; +.L_l2_done: +#endif + /* Zero out the bss region * Note: this will fail if bss is 0 bytes ... */ |