diff options
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/head_64.S | 14 | ||||
| -rw-r--r-- | arch/powerpc/kernel/udbg.c | 4 |
2 files changed, 17 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S index dea8191253d..06c7251c1bf 100644 --- a/arch/powerpc/kernel/head_64.S +++ b/arch/powerpc/kernel/head_64.S @@ -53,7 +53,8 @@ * 2. The kernel is entered at __start * -or- For OPAL entry: * 1. The MMU is off, processor in HV mode, primary CPU enters at 0 - * with device-tree in gpr3 + * with device-tree in gpr3. We also get OPAL base in r8 and + * entry in r9 for debugging purposes * 2. Secondary processors enter at 0x60 with PIR in gpr3 * * For iSeries: @@ -335,6 +336,11 @@ _GLOBAL(__start_initialization_multiplatform) /* Save parameters */ mr r31,r3 mr r30,r4 +#ifdef CONFIG_PPC_EARLY_DEBUG_OPAL + /* Save OPAL entry */ + mr r28,r8 + mr r29,r9 +#endif #ifdef CONFIG_PPC_BOOK3E bl .start_initialization_book3e @@ -711,6 +717,12 @@ _INIT_STATIC(start_here_multiplatform) bdnz 3b 4: +#ifdef CONFIG_PPC_EARLY_DEBUG_OPAL + /* Setup OPAL entry */ + std r28,0(r11); + std r29,8(r11); +#endif + #ifndef CONFIG_PPC_BOOK3E mfmsr r6 ori r6,r6,MSR_RI diff --git a/arch/powerpc/kernel/udbg.c b/arch/powerpc/kernel/udbg.c index 5b3e98e0315..35f948203ec 100644 --- a/arch/powerpc/kernel/udbg.c +++ b/arch/powerpc/kernel/udbg.c @@ -69,6 +69,10 @@ void __init udbg_early_init(void) udbg_init_wsp(); #elif defined(CONFIG_PPC_EARLY_DEBUG_PS3GELIC) udbg_init_ps3gelic(); +#elif defined(CONFIG_PPC_EARLY_DEBUG_OPAL_RAW) + udbg_init_debug_opal_raw(); +#elif defined(CONFIG_PPC_EARLY_DEBUG_OPAL_HVSI) + udbg_init_debug_opal_hvsi(); #endif #ifdef CONFIG_PPC_EARLY_DEBUG |