X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;ds=sidebyside;f=arch%2Fpowerpc%2Fcpu%2Fmpc85xx%2Frelease.S;h=fcfba7ec19d2b5546ce53b2e6b570400a2e54ff8;hb=e97f9d817e600cd6f43d1d0da76f5787e33a5c56;hp=4ba44a9028b0e98e912a1a6a7e039329dc5c8489;hpb=3e4d27b06d7484040355e22eec2cbce7335d6dab;p=oweals%2Fu-boot.git diff --git a/arch/powerpc/cpu/mpc85xx/release.S b/arch/powerpc/cpu/mpc85xx/release.S index 4ba44a9028..fcfba7ec19 100644 --- a/arch/powerpc/cpu/mpc85xx/release.S +++ b/arch/powerpc/cpu/mpc85xx/release.S @@ -2,23 +2,7 @@ * Copyright 2008-2012 Freescale Semiconductor, Inc. * Kumar Gala * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA + * SPDX-License-Identifier: GPL-2.0+ */ #include @@ -26,8 +10,6 @@ #include #include -#define _LINUX_CONFIG_H 1 /* avoid reading Linux autoconf.h file */ - #include #include @@ -69,9 +51,9 @@ __secondary_start_page: #endif #ifdef CONFIG_SYS_FSL_ERRATUM_CPU_A003999 - mfspr r3,977 + mfspr r3,SPRN_HDBCR1 oris r3,r3,0x0100 - mtspr 977,r3 + mtspr SPRN_HDBCR1,r3 #endif #ifdef CONFIG_SYS_FSL_ERRATUM_A004510 @@ -93,10 +75,10 @@ __secondary_start_page: 1: /* Erratum says set bits 55:60 to 001001 */ msync isync - mfspr r3,976 + mfspr r3,SPRN_HDBCR0 li r4,0x48 rlwimi r3,r4,0,0x1f8 - mtspr 976,r3 + mtspr SPRN_HDBCR0,r3 isync 2: #endif @@ -154,16 +136,12 @@ __secondary_start_page: ori r3,r3,toreset(__spin_table_addr)@l lwz r3,0(r3) - /* - * r10 has the base address for the entry. - * we cannot access it yet before setting up a new TLB - */ mfspr r0,SPRN_PIR -#if defined(CONFIG_E6500) +#ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2 /* - * PIR definition for E6500 + * PIR definition for Chassis 2 * 0-17 Reserved (logic 0s) - * 8-19 CHIP_ID, 2'b00 - SoC 1 + * 18-19 CHIP_ID, 2'b00 - SoC 1 * all others - reserved * 20-24 CLUSTER_ID 5'b00000 - CCM 1 * all others - reserved @@ -177,32 +155,33 @@ __secondary_start_page: * 2'b11 - core 3 * 29-31 THREAD_ID 3'b000 - thread 0 * 3'b001 - thread 1 + * + * Power-on PIR increments threads by 0x01, cores within a cluster by 0x08 + * and clusters by 0x20. + * + * We renumber PIR so that all threads in the system are consecutive. */ - rlwinm r4,r0,29,25,31 + + rlwinm r8,r0,29,0x03 /* r8 = core within cluster */ + srwi r10,r0,5 /* r10 = cluster */ + + mulli r5,r10,CONFIG_SYS_FSL_CORES_PER_CLUSTER + add r5,r5,r8 /* for spin table index */ + mulli r4,r5,CONFIG_SYS_FSL_THREADS_PER_CORE /* for PIR */ #elif defined(CONFIG_E500MC) rlwinm r4,r0,27,27,31 + mr r5,r4 #else mr r4,r0 + mr r5,r4 #endif - slwi r8,r4,6 /* spin table is padded to 64 byte */ - add r10,r3,r8 -#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. + * r10 has the base address for the entry. + * we cannot access it yet before setting up a new TLB */ - rlwinm r4,r0,30,24,30 -#endif + slwi r8,r5,6 /* spin table is padded to 64 byte */ + add r10,r3,r8 mtspr SPRN_PIR,r4 /* write to PIR register */ @@ -245,6 +224,21 @@ __secondary_start_page: 2: #endif +#ifdef CONFIG_SYS_FSL_ERRATUM_A005812 + /* + * A-005812 workaround sets bit 32 of SPR 976 for SoCs running in + * write shadow mode. This code should run after other code setting + * DCWS. + */ + mfspr r3,L1CSR2 + andis. r3,r3,(L1CSR2_DCWS)@h + beq 1f + mfspr r3, SPRN_HDBCR0 + oris r3, r3, 0x8000 + mtspr SPRN_HDBCR0, r3 +1: +#endif + #ifdef CONFIG_BACKSIDE_L2_CACHE /* skip L2 setup on P2040/P2040E as they have no L2 */ mfspr r3,SPRN_SVR @@ -351,7 +345,13 @@ __secondary_reset_vector: .align L1_CACHE_SHIFT .global __second_half_boot_page __second_half_boot_page: -#define EPAPR_MAGIC 0x45504150 +#ifdef CONFIG_PPC_SPINTABLE_COMPATIBLE + lis r3,(spin_table_compat - __second_half_boot_page)@h + ori r3,r3,(spin_table_compat - __second_half_boot_page)@l + add r3,r3,r11 /* r11 has the address of __second_half_boot_page */ + lwz r14,0(r3) +#endif + #define ENTRY_ADDR_UPPER 0 #define ENTRY_ADDR_LOWER 4 #define ENTRY_R3_UPPER 8 @@ -383,7 +383,24 @@ __second_half_boot_page: stw r8,ENTRY_ADDR_LOWER(r10) /* spin waiting for addr */ -3: lwz r4,ENTRY_ADDR_LOWER(r10) +3: +/* + * To comply with ePAPR 1.1, the spin table has been moved to cache-enabled + * memory. Old OS may not work with this change. A patch is waiting to be + * accepted for Linux kernel. Other OS needs similar fix to spin table. + * For OSes with old spin table code, we can enable this temporary fix by + * setting environmental variable "spin_table_compat". For new OSes, set + * "spin_table_compat=no". After Linux is fixed, we can remove this macro + * and related code. For now, it is enabled by default. + */ +#ifdef CONFIG_PPC_SPINTABLE_COMPATIBLE + cmpwi r14,0 + beq 4f + dcbf 0, r10 + sync +4: +#endif + lwz r4,ENTRY_ADDR_LOWER(r10) andi. r11,r4,1 bne 3b isync @@ -460,5 +477,14 @@ __second_half_boot_page: .globl __spin_table __spin_table: .space CONFIG_MAX_CPUS*ENTRY_SIZE + +#ifdef CONFIG_PPC_SPINTABLE_COMPATIBLE + .align L1_CACHE_SHIFT + .global spin_table_compat +spin_table_compat: + .long 1 + +#endif + __spin_table_end: .space 4096 - (__spin_table_end - __spin_table)