diff options
| author | York Sun <yorksun@freescale.com> | 2012-08-17 08:20:26 +0000 |
|---|---|---|
| committer | Andy Fleming <afleming@freescale.com> | 2012-08-23 12:16:55 -0500 |
| commit | 709389b654de05fd6035656f5e082ba1757807b3 (patch) | |
| tree | 1fee7e92d8155b20351a59eb51ef7d36e337a6f0 /arch/powerpc/cpu/mpc85xx/release.S | |
| parent | ffdf8890ae2564e8b5af36b1b384ca7e9bcdd7c2 (diff) | |
| download | talos-obmc-uboot-709389b654de05fd6035656f5e082ba1757807b3.tar.gz talos-obmc-uboot-709389b654de05fd6035656f5e082ba1757807b3.zip | |
powerpc/mpc8xxx: fix core id for multicore booting
For the cores with multiple threads, we need to figure out which physical
core a thread belongs. To match the core ids, update PIR registers and
spin tables.
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Diffstat (limited to 'arch/powerpc/cpu/mpc85xx/release.S')
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/release.S | 45 |
1 files changed, 42 insertions, 3 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/release.S b/arch/powerpc/cpu/mpc85xx/release.S index 043d0ff773..22e73e0661 100644 --- a/arch/powerpc/cpu/mpc85xx/release.S +++ b/arch/powerpc/cpu/mpc85xx/release.S @@ -1,5 +1,5 @@ /* - * Copyright 2008-2011 Freescale Semiconductor, Inc. + * Copyright 2008-2012 Freescale Semiconductor, Inc. * Kumar Gala <kumar.gala@freescale.com> * * See file CREDITS for list of people who contributed to this @@ -155,7 +155,27 @@ __secondary_start_page: /* r10 has the base address for the entry */ mfspr r0,SPRN_PIR -#ifdef CONFIG_E500MC +#if defined(CONFIG_E6500) +/* + * PIR definition for E6500 + * 0-17 Reserved (logic 0s) + * 8-19 CHIP_ID, 2’b00 - SoC 1 + * all others - reserved + * 20-24 CLUSTER_ID 5’b00000 - CCM 1 + * all others - reserved + * 25-26 CORE_CLUSTER_ID 2’b00 - cluster 1 + * 2’b01 - cluster 2 + * 2’b10 - cluster 3 + * 2’b11 - cluster 4 + * 27-28 CORE_ID 2’b00 - core 0 + * 2’b01 - core 1 + * 2’b10 - core 2 + * 2’b11 - core 3 + * 29-31 THREAD_ID 3’b000 - thread 0 + * 3’b001 - thread 1 + */ + rlwinm r4,r0,29,25,31 +#elif defined(CONFIG_E500MC) rlwinm r4,r0,27,27,31 #else mr r4,r0 @@ -170,6 +190,25 @@ __secondary_start_page: mtspr L1CSR2,r8 #endif +#ifdef CONFIG_E6500 + mfspr r0,SPRN_PIR + /* + * core 0 thread 0: pir reset value 0x00, new pir 0 + * core 0 thread 1: pir reset value 0x01, new pir 1 + * core 1 thread 0: pir reset value 0x08, new pir 2 + * core 1 thread 1: pir reset value 0x09, new pir 3 + * core 2 thread 0: pir reset value 0x10, new pir 4 + * core 2 thread 1: pir reset value 0x11, new pir 5 + * etc. + * + * Only thread 0 of each core will be running, updating PIR doesn't + * need to deal with the thread bits. + */ + rlwinm r4,r0,30,24,30 +#endif + + mtspr SPRN_PIR,r4 /* write to PIR register */ + #if defined(CONFIG_SYS_P4080_ERRATUM_CPU22) || \ defined(CONFIG_SYS_FSL_ERRATUM_NMG_CPU_A011) /* @@ -253,7 +292,7 @@ __secondary_start_page: /* setup the entry */ li r3,0 li r8,1 - stw r0,ENTRY_PIR(r10) + stw r4,ENTRY_PIR(r10) stw r3,ENTRY_ADDR_UPPER(r10) stw r8,ENTRY_ADDR_LOWER(r10) stw r3,ENTRY_R3_UPPER(r10) |
