mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-17 10:18:38 +00:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
491 lines
11 KiB
ArmAsm
491 lines
11 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright 2008-2012 Freescale Semiconductor, Inc.
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* Kumar Gala <kumar.gala@freescale.com>
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*/
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#include <asm-offsets.h>
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#include <config.h>
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#include <mpc85xx.h>
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#include <ppc_asm.tmpl>
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#include <ppc_defs.h>
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#include <asm/cache.h>
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#include <asm/mmu.h>
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/* To boot secondary cpus, we need a place for them to start up.
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* Normally, they start at 0xfffffffc, but that's usually the
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* firmware, and we don't want to have to run the firmware again.
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* Instead, the primary cpu will set the BPTR to point here to
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* this page. We then set up the core, and head to
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* start_secondary. Note that this means that the code below
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* must never exceed 1023 instructions (the branch at the end
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* would then be the 1024th).
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*/
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.globl __secondary_start_page
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.align 12
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__secondary_start_page:
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/* First do some preliminary setup */
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lis r3, HID0_EMCP@h /* enable machine check */
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#ifndef CONFIG_E500MC
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ori r3,r3,HID0_TBEN@l /* enable Timebase */
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#endif
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#ifdef CONFIG_PHYS_64BIT
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ori r3,r3,HID0_ENMAS7@l /* enable MAS7 updates */
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#endif
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mtspr SPRN_HID0,r3
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#ifndef CONFIG_E500MC
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li r3,(HID1_ASTME|HID1_ABE)@l /* Addr streaming & broadcast */
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mfspr r0,PVR
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andi. r0,r0,0xff
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cmpwi r0,0x50@l /* if we are rev 5.0 or greater set MBDD */
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blt 1f
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/* Set MBDD bit also */
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ori r3, r3, HID1_MBDD@l
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1:
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mtspr SPRN_HID1,r3
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#endif
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#ifdef CONFIG_SYS_FSL_ERRATUM_CPU_A003999
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mfspr r3,SPRN_HDBCR1
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oris r3,r3,0x0100
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mtspr SPRN_HDBCR1,r3
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#endif
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#ifdef CONFIG_SYS_FSL_ERRATUM_A004510
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mfspr r3,SPRN_SVR
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rlwinm r3,r3,0,0xff
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li r4,CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV
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cmpw r3,r4
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beq 1f
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#ifdef CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2
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li r4,CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2
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cmpw r3,r4
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beq 1f
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#endif
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/* Not a supported revision affected by erratum */
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b 2f
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1: /* Erratum says set bits 55:60 to 001001 */
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msync
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isync
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mfspr r3,SPRN_HDBCR0
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li r4,0x48
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rlwimi r3,r4,0,0x1f8
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mtspr SPRN_HDBCR0,r3
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isync
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2:
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#endif
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/* Enable branch prediction */
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lis r3,BUCSR_ENABLE@h
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ori r3,r3,BUCSR_ENABLE@l
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mtspr SPRN_BUCSR,r3
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/* Ensure TB is 0 */
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li r3,0
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mttbl r3
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mttbu r3
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/* Enable/invalidate the I-Cache */
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lis r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@h
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ori r2,r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@l
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mtspr SPRN_L1CSR1,r2
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1:
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mfspr r3,SPRN_L1CSR1
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and. r1,r3,r2
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bne 1b
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lis r3,(L1CSR1_CPE|L1CSR1_ICE)@h
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ori r3,r3,(L1CSR1_CPE|L1CSR1_ICE)@l
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mtspr SPRN_L1CSR1,r3
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isync
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2:
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mfspr r3,SPRN_L1CSR1
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andi. r1,r3,L1CSR1_ICE@l
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beq 2b
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/* Enable/invalidate the D-Cache */
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lis r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@h
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ori r2,r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@l
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mtspr SPRN_L1CSR0,r2
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1:
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mfspr r3,SPRN_L1CSR0
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and. r1,r3,r2
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bne 1b
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lis r3,(L1CSR0_CPE|L1CSR0_DCE)@h
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ori r3,r3,(L1CSR0_CPE|L1CSR0_DCE)@l
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mtspr SPRN_L1CSR0,r3
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isync
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2:
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mfspr r3,SPRN_L1CSR0
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andi. r1,r3,L1CSR0_DCE@l
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beq 2b
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#define toreset(x) (x - __secondary_start_page + 0xfffff000)
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/* get our PIR to figure out our table entry */
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lis r3,toreset(__spin_table_addr)@h
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ori r3,r3,toreset(__spin_table_addr)@l
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lwz r3,0(r3)
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mfspr r0,SPRN_PIR
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#ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2
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/*
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* PIR definition for Chassis 2
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* 0-17 Reserved (logic 0s)
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* 18-19 CHIP_ID, 2'b00 - SoC 1
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* all others - reserved
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* 20-24 CLUSTER_ID 5'b00000 - CCM 1
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* all others - reserved
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* 25-26 CORE_CLUSTER_ID 2'b00 - cluster 1
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* 2'b01 - cluster 2
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* 2'b10 - cluster 3
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* 2'b11 - cluster 4
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* 27-28 CORE_ID 2'b00 - core 0
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* 2'b01 - core 1
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* 2'b10 - core 2
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* 2'b11 - core 3
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* 29-31 THREAD_ID 3'b000 - thread 0
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* 3'b001 - thread 1
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*
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* Power-on PIR increments threads by 0x01, cores within a cluster by 0x08
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* and clusters by 0x20.
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*
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* We renumber PIR so that all threads in the system are consecutive.
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*/
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rlwinm r8,r0,29,0x03 /* r8 = core within cluster */
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srwi r10,r0,5 /* r10 = cluster */
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mulli r5,r10,CONFIG_SYS_FSL_CORES_PER_CLUSTER
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add r5,r5,r8 /* for spin table index */
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mulli r4,r5,CONFIG_SYS_FSL_THREADS_PER_CORE /* for PIR */
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#elif defined(CONFIG_E500MC)
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rlwinm r4,r0,27,27,31
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mr r5,r4
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#else
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mr r4,r0
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mr r5,r4
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#endif
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/*
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* r10 has the base address for the entry.
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* we cannot access it yet before setting up a new TLB
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*/
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slwi r8,r5,6 /* spin table is padded to 64 byte */
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add r10,r3,r8
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mtspr SPRN_PIR,r4 /* write to PIR register */
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#ifdef CONFIG_SYS_FSL_ERRATUM_A007907
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mfspr r8, L1CSR2
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clrrwi r8, r8, 10 /* clear bit [54-63] DCSTASHID */
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mtspr L1CSR2, r8
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#else
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#ifdef CONFIG_SYS_CACHE_STASHING
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/* set stash id to (coreID) * 2 + 32 + L1 CT (0) */
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slwi r8,r4,1
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addi r8,r8,32
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mtspr L1CSR2,r8
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#endif
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#endif /* CONFIG_SYS_FSL_ERRATUM_A007907 */
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#if defined(CONFIG_SYS_P4080_ERRATUM_CPU22) || \
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defined(CONFIG_SYS_FSL_ERRATUM_NMG_CPU_A011)
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/*
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* CPU22 applies to P4080 rev 1.0, 2.0, fixed in 3.0
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* NMG_CPU_A011 applies to P4080 rev 1.0, 2.0, fixed in 3.0
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* also appleis to P3041 rev 1.0, 1.1, P2041 rev 1.0, 1.1
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*/
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mfspr r3,SPRN_SVR
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rlwinm r6,r3,24,~0x800 /* clear E bit */
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lis r5,SVR_P4080@h
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ori r5,r5,SVR_P4080@l
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cmpw r6,r5
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bne 1f
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rlwinm r3,r3,0,0xf0
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li r5,0x30
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cmpw r3,r5
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bge 2f
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1:
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#ifdef CONFIG_SYS_FSL_ERRATUM_NMG_CPU_A011
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lis r3,toreset(enable_cpu_a011_workaround)@ha
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lwz r3,toreset(enable_cpu_a011_workaround)@l(r3)
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cmpwi r3,0
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beq 2f
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#endif
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mfspr r3,L1CSR2
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oris r3,r3,(L1CSR2_DCWS)@h
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mtspr L1CSR2,r3
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2:
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#endif
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#ifdef CONFIG_SYS_FSL_ERRATUM_A005812
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/*
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* A-005812 workaround sets bit 32 of SPR 976 for SoCs running in
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* write shadow mode. This code should run after other code setting
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* DCWS.
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*/
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mfspr r3,L1CSR2
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andis. r3,r3,(L1CSR2_DCWS)@h
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beq 1f
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mfspr r3, SPRN_HDBCR0
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oris r3, r3, 0x8000
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mtspr SPRN_HDBCR0, r3
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1:
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#endif
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#ifdef CONFIG_BACKSIDE_L2_CACHE
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/* skip L2 setup on P2040/P2040E as they have no L2 */
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mfspr r3,SPRN_SVR
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rlwinm r6,r3,24,~0x800 /* clear E bit of SVR */
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lis r3,SVR_P2040@h
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ori r3,r3,SVR_P2040@l
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cmpw r6,r3
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beq 3f
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/* Enable/invalidate the L2 cache */
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msync
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lis r2,(L2CSR0_L2FI|L2CSR0_L2LFC)@h
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ori r2,r2,(L2CSR0_L2FI|L2CSR0_L2LFC)@l
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mtspr SPRN_L2CSR0,r2
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1:
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mfspr r3,SPRN_L2CSR0
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and. r1,r3,r2
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bne 1b
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#ifdef CONFIG_SYS_CACHE_STASHING
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/* set stash id to (coreID) * 2 + 32 + L2 (1) */
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addi r3,r8,1
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mtspr SPRN_L2CSR1,r3
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#endif
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lis r3,CONFIG_SYS_INIT_L2CSR0@h
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ori r3,r3,CONFIG_SYS_INIT_L2CSR0@l
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mtspr SPRN_L2CSR0,r3
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isync
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2:
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mfspr r3,SPRN_L2CSR0
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andis. r1,r3,L2CSR0_L2E@h
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beq 2b
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#endif
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3:
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/* setup mapping for the spin table, WIMGE=0b00100 */
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lis r13,toreset(__spin_table_addr)@h
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ori r13,r13,toreset(__spin_table_addr)@l
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lwz r13,0(r13)
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/* mask by 4K */
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rlwinm r13,r13,0,0,19
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lis r11,(MAS0_TLBSEL(1)|MAS0_ESEL(1))@h
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mtspr SPRN_MAS0,r11
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lis r11,(MAS1_VALID|MAS1_IPROT)@h
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ori r11,r11,(MAS1_TS|MAS1_TSIZE(BOOKE_PAGESZ_4K))@l
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mtspr SPRN_MAS1,r11
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oris r11,r13,(MAS2_M|MAS2_G)@h
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ori r11,r13,(MAS2_M|MAS2_G)@l
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mtspr SPRN_MAS2,r11
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oris r11,r13,(MAS3_SX|MAS3_SW|MAS3_SR)@h
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ori r11,r13,(MAS3_SX|MAS3_SW|MAS3_SR)@l
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mtspr SPRN_MAS3,r11
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li r11,0
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mtspr SPRN_MAS7,r11
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tlbwe
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/*
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* __bootpg_addr has the address of __second_half_boot_page
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* jump there in AS=1 space with cache enabled
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*/
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lis r13,toreset(__bootpg_addr)@h
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ori r13,r13,toreset(__bootpg_addr)@l
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lwz r11,0(r13)
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mtspr SPRN_SRR0,r11
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mfmsr r13
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ori r12,r13,MSR_IS|MSR_DS@l
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mtspr SPRN_SRR1,r12
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rfi
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/*
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* Allocate some space for the SDRAM address of the bootpg.
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* This variable has to be in the boot page so that it can
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* be accessed by secondary cores when they come out of reset.
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*/
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.align L1_CACHE_SHIFT
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.globl __bootpg_addr
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__bootpg_addr:
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.long 0
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.global __spin_table_addr
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__spin_table_addr:
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.long 0
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/*
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* This variable is set by cpu_init_r() after parsing hwconfig
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* to enable workaround for erratum NMG_CPU_A011.
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*/
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.align L1_CACHE_SHIFT
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.global enable_cpu_a011_workaround
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enable_cpu_a011_workaround:
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.long 1
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/* Fill in the empty space. The actual reset vector is
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* the last word of the page */
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__secondary_start_code_end:
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.space 4092 - (__secondary_start_code_end - __secondary_start_page)
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__secondary_reset_vector:
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b __secondary_start_page
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/* this is a separated page for the spin table and cacheable boot code */
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.align L1_CACHE_SHIFT
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.global __second_half_boot_page
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__second_half_boot_page:
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#ifdef CONFIG_PPC_SPINTABLE_COMPATIBLE
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lis r3,(spin_table_compat - __second_half_boot_page)@h
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ori r3,r3,(spin_table_compat - __second_half_boot_page)@l
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add r3,r3,r11 /* r11 has the address of __second_half_boot_page */
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lwz r14,0(r3)
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#endif
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#define ENTRY_ADDR_UPPER 0
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#define ENTRY_ADDR_LOWER 4
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#define ENTRY_R3_UPPER 8
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#define ENTRY_R3_LOWER 12
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#define ENTRY_RESV 16
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#define ENTRY_PIR 20
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#define ENTRY_SIZE 64
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/*
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* setup the entry
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* r10 has the base address of the spin table.
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* spin table is defined as
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* struct {
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* uint64_t entry_addr;
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* uint64_t r3;
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* uint32_t rsvd1;
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* uint32_t pir;
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* };
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* we pad this struct to 64 bytes so each entry is in its own cacheline
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*/
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li r3,0
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li r8,1
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mfspr r4,SPRN_PIR
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stw r3,ENTRY_ADDR_UPPER(r10)
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stw r3,ENTRY_R3_UPPER(r10)
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stw r4,ENTRY_R3_LOWER(r10)
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stw r3,ENTRY_RESV(r10)
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stw r4,ENTRY_PIR(r10)
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msync
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stw r8,ENTRY_ADDR_LOWER(r10)
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/* spin waiting for addr */
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3:
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/*
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* To comply with ePAPR 1.1, the spin table has been moved to cache-enabled
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* memory. Old OS may not work with this change. A patch is waiting to be
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* accepted for Linux kernel. Other OS needs similar fix to spin table.
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* For OSes with old spin table code, we can enable this temporary fix by
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* setting environmental variable "spin_table_compat". For new OSes, set
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* "spin_table_compat=no". After Linux is fixed, we can remove this macro
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* and related code. For now, it is enabled by default.
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*/
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#ifdef CONFIG_PPC_SPINTABLE_COMPATIBLE
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cmpwi r14,0
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beq 4f
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dcbf 0, r10
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sync
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4:
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#endif
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lwz r4,ENTRY_ADDR_LOWER(r10)
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andi. r11,r4,1
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bne 3b
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isync
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/* get the upper bits of the addr */
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lwz r11,ENTRY_ADDR_UPPER(r10)
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/* setup branch addr */
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mtspr SPRN_SRR0,r4
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/* mark the entry as released */
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li r8,3
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stw r8,ENTRY_ADDR_LOWER(r10)
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/* mask by ~64M to setup our tlb we will jump to */
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rlwinm r12,r4,0,0,5
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/*
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* setup r3, r4, r5, r6, r7, r8, r9
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* r3 contains the value to put in the r3 register at secondary cpu
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* entry. The high 32-bits are ignored on 32-bit chip implementations.
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* 64-bit chip implementations however shall load all 64-bits
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*/
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#ifdef CONFIG_SYS_PPC64
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ld r3,ENTRY_R3_UPPER(r10)
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#else
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lwz r3,ENTRY_R3_LOWER(r10)
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#endif
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li r4,0
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li r5,0
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li r6,0
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lis r7,(64*1024*1024)@h
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li r8,0
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li r9,0
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/* load up the pir */
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lwz r0,ENTRY_PIR(r10)
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mtspr SPRN_PIR,r0
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mfspr r0,SPRN_PIR
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stw r0,ENTRY_PIR(r10)
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mtspr IVPR,r12
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/*
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* Coming here, we know the cpu has one TLB mapping in TLB1[0]
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* which maps 0xfffff000-0xffffffff one-to-one. We set up a
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* second mapping that maps addr 1:1 for 64M, and then we jump to
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* addr
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*/
|
|
lis r10,(MAS0_TLBSEL(1)|MAS0_ESEL(0))@h
|
|
mtspr SPRN_MAS0,r10
|
|
lis r10,(MAS1_VALID|MAS1_IPROT)@h
|
|
ori r10,r10,(MAS1_TSIZE(BOOKE_PAGESZ_64M))@l
|
|
mtspr SPRN_MAS1,r10
|
|
/* WIMGE = 0b00000 for now */
|
|
mtspr SPRN_MAS2,r12
|
|
ori r12,r12,(MAS3_SX|MAS3_SW|MAS3_SR)
|
|
mtspr SPRN_MAS3,r12
|
|
#ifdef CONFIG_ENABLE_36BIT_PHYS
|
|
mtspr SPRN_MAS7,r11
|
|
#endif
|
|
tlbwe
|
|
|
|
/* Now we have another mapping for this page, so we jump to that
|
|
* mapping
|
|
*/
|
|
mtspr SPRN_SRR1,r13
|
|
rfi
|
|
|
|
|
|
.align 6
|
|
.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)
|