diff options
Diffstat (limited to 'arch/powerpc/kernel/head_64.S')
| -rw-r--r-- | arch/powerpc/kernel/head_64.S | 41 |
1 files changed, 33 insertions, 8 deletions
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S index 8a8bf79ef04496..1c066d1253756a 100644 --- a/arch/powerpc/kernel/head_64.S +++ b/arch/powerpc/kernel/head_64.S @@ -154,11 +154,15 @@ _GLOBAL(__secondary_hold) bne 100b #ifdef CONFIG_HMT - b .hmt_init + LOADADDR(r4, .hmt_init) + mtctr r4 + bctr #else #ifdef CONFIG_SMP + LOADADDR(r4, .pSeries_secondary_smp_init) + mtctr r4 mr r3,r24 - b .pSeries_secondary_smp_init + bctr #else BUG_OPCODE #endif @@ -200,6 +204,20 @@ exception_marker: #define EX_R3 64 #define EX_LR 72 +/* + * We're short on space and time in the exception prolog, so we can't use + * the normal LOADADDR macro. Normally we just need the low halfword of the + * address, but for Kdump we need the whole low word. + */ +#ifdef CONFIG_CRASH_DUMP +#define LOAD_HANDLER(reg, label) \ + oris reg,reg,(label)@h; /* virt addr of handler ... */ \ + ori reg,reg,(label)@l; /* .. and the rest */ +#else +#define LOAD_HANDLER(reg, label) \ + ori reg,reg,(label)@l; /* virt addr of handler ... */ +#endif + #define EXCEPTION_PROLOG_PSERIES(area, label) \ mfspr r13,SPRN_SPRG3; /* get paca address into r13 */ \ std r9,area+EX_R9(r13); /* save r9 - r12 */ \ @@ -212,7 +230,7 @@ exception_marker: clrrdi r12,r13,32; /* get high part of &label */ \ mfmsr r10; \ mfspr r11,SPRN_SRR0; /* save SRR0 */ \ - ori r12,r12,(label)@l; /* virt addr of handler */ \ + LOAD_HANDLER(r12,label) \ ori r10,r10,MSR_IR|MSR_DR|MSR_RI; \ mtspr SPRN_SRR0,r12; \ mfspr r12,SPRN_SRR1; /* and SRR1 */ \ @@ -553,6 +571,7 @@ slb_miss_user_pseries: * Vectors for the FWNMI option. Share common code. */ .globl system_reset_fwnmi + .align 7 system_reset_fwnmi: HMT_MEDIUM mtspr SPRN_SPRG1,r13 /* save r13 */ @@ -560,6 +579,7 @@ system_reset_fwnmi: EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, system_reset_common) .globl machine_check_fwnmi + .align 7 machine_check_fwnmi: HMT_MEDIUM mtspr SPRN_SPRG1,r13 /* save r13 */ @@ -726,7 +746,8 @@ iSeries_secondary_smp_loop: decrementer_iSeries_masked: li r11,1 stb r11,PACALPPACA+LPPACADECRINT(r13) - lwz r12,PACADEFAULTDECR(r13) + LOADBASE(r12,tb_ticks_per_jiffy) + lwz r12,OFF(tb_ticks_per_jiffy)(r12) mtspr SPRN_DEC,r12 /* fall through */ @@ -1345,7 +1366,7 @@ _GLOBAL(do_stab_bolted) * fixed address (the linker can't compute (u64)&initial_stab >> * PAGE_SHIFT). */ - . = STAB0_PHYS_ADDR /* 0x6000 */ + . = STAB0_OFFSET /* 0x6000 */ .globl initial_stab initial_stab: .space 4096 @@ -1485,11 +1506,13 @@ _STATIC(__mmu_off) * */ _GLOBAL(__start_initialization_multiplatform) +#ifdef CONFIG_PPC_MULTIPLATFORM /* * Are we booted from a PROM Of-type client-interface ? */ cmpldi cr0,r5,0 bne .__boot_from_prom /* yes -> prom */ +#endif /* Save parameters */ mr r31,r3 @@ -1510,6 +1533,7 @@ _GLOBAL(__start_initialization_multiplatform) bl .__mmu_off b .__after_prom_start +#ifdef CONFIG_PPC_MULTIPLATFORM _STATIC(__boot_from_prom) /* Save parameters */ mr r31,r3 @@ -1542,6 +1566,7 @@ _STATIC(__boot_from_prom) bl .prom_init /* We never return */ trap +#endif /* * At this point, r3 contains the physical address we are running at, @@ -1550,7 +1575,7 @@ _STATIC(__boot_from_prom) _STATIC(__after_prom_start) /* - * We need to run with __start at physical address 0. + * We need to run with __start at physical address PHYSICAL_START. * This will leave some code in the first 256B of * real memory, which are reserved for software use. * The remainder of the first page is loaded with the fixed @@ -1565,7 +1590,7 @@ _STATIC(__after_prom_start) mr r26,r3 SET_REG_TO_CONST(r27,KERNELBASE) - li r3,0 /* target addr */ + LOADADDR(r3, PHYSICAL_START) /* target addr */ // XXX FIXME: Use phys returned by OF (r30) add r4,r27,r26 /* source addr */ @@ -1846,7 +1871,7 @@ _STATIC(start_here_multiplatform) mulli r13,r27,PACA_SIZE /* Calculate vaddr of right paca */ add r13,r13,r24 /* for this processor. */ add r13,r13,r26 /* convert to physical addr */ - mtspr SPRN_SPRG3,r13 /* PPPBBB: Temp... -Peter */ + mtspr SPRN_SPRG3,r13 /* Do very early kernel initializations, including initial hash table, * stab and slb setup before we turn on relocation. */ |