Secondary cores need to be released from holdoff by boot release registers. With GPP bootrom, they can boot from main memory directly. Individual spin table is used for each core. If a single release address is needed, defining macro CONFIG_FSL_SMP_RELEASE_ALL will use the CPU_RELEASE_ADDR. Spin table and the boot page is reserved in device tree so OS won't overwrite.
Signed-off-by: York Sun yorksun@freescale.com Signed-off-by: Arnab Basu arnab.basu@freescale.com --- v2: Removed copying boot page. Use u-boot image as is in memory. Added dealing with different size of addr_cell in device tree. Added dealing with big- and little-endian. Added flushing spin table after cpu_release().
arch/arm/cpu/armv8/fsl-lsch3/Makefile | 2 + arch/arm/cpu/armv8/fsl-lsch3/cpu.c | 13 ++ arch/arm/cpu/armv8/fsl-lsch3/cpu.h | 1 + arch/arm/cpu/armv8/fsl-lsch3/fdt.c | 56 +++++++ arch/arm/cpu/armv8/fsl-lsch3/lowlevel.S | 128 ++++++++++++--- arch/arm/cpu/armv8/fsl-lsch3/mp.c | 172 +++++++++++++++++++++ arch/arm/cpu/armv8/fsl-lsch3/mp.h | 36 +++++ arch/arm/cpu/armv8/transition.S | 63 +------- arch/arm/include/asm/arch-fsl-lsch3/config.h | 3 +- arch/arm/include/asm/arch-fsl-lsch3/immap_lsch3.h | 35 +++++ arch/arm/include/asm/macro.h | 92 +++++++++++ arch/arm/lib/gic_64.S | 10 +- common/board_f.c | 2 +- 13 files changed, 525 insertions(+), 88 deletions(-) create mode 100644 arch/arm/cpu/armv8/fsl-lsch3/fdt.c create mode 100644 arch/arm/cpu/armv8/fsl-lsch3/mp.c create mode 100644 arch/arm/cpu/armv8/fsl-lsch3/mp.h
diff --git a/arch/arm/cpu/armv8/fsl-lsch3/Makefile b/arch/arm/cpu/armv8/fsl-lsch3/Makefile index 9249537..f920eeb 100644 --- a/arch/arm/cpu/armv8/fsl-lsch3/Makefile +++ b/arch/arm/cpu/armv8/fsl-lsch3/Makefile @@ -7,3 +7,5 @@ obj-y += cpu.o obj-y += lowlevel.o obj-y += speed.o +obj-$(CONFIG_MP) += mp.o +obj-$(CONFIG_OF_LIBFDT) += fdt.o diff --git a/arch/arm/cpu/armv8/fsl-lsch3/cpu.c b/arch/arm/cpu/armv8/fsl-lsch3/cpu.c index c129d03..47b947f 100644 --- a/arch/arm/cpu/armv8/fsl-lsch3/cpu.c +++ b/arch/arm/cpu/armv8/fsl-lsch3/cpu.c @@ -11,6 +11,7 @@ #include <asm/io.h> #include <asm/arch-fsl-lsch3/immap_lsch3.h> #include "cpu.h" +#include "mp.h" #include "speed.h" #include <fsl_mc.h>
@@ -434,3 +435,15 @@ int cpu_eth_init(bd_t *bis) #endif return error; } + + +int arch_early_init_r(void) +{ + int rv; + rv = fsl_lsch3_wake_seconday_cores(); + + if (rv) + printf("Did not wake secondary cores\n"); + + return 0; +} diff --git a/arch/arm/cpu/armv8/fsl-lsch3/cpu.h b/arch/arm/cpu/armv8/fsl-lsch3/cpu.h index 28544d7..2e3312b 100644 --- a/arch/arm/cpu/armv8/fsl-lsch3/cpu.h +++ b/arch/arm/cpu/armv8/fsl-lsch3/cpu.h @@ -5,3 +5,4 @@ */
int fsl_qoriq_core_to_cluster(unsigned int core); +u32 cpu_mask(void); diff --git a/arch/arm/cpu/armv8/fsl-lsch3/fdt.c b/arch/arm/cpu/armv8/fsl-lsch3/fdt.c new file mode 100644 index 0000000..2dbcdcb --- /dev/null +++ b/arch/arm/cpu/armv8/fsl-lsch3/fdt.c @@ -0,0 +1,56 @@ +/* + * Copyright 2014 Freescale Semiconductor, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <libfdt.h> +#include <fdt_support.h> +#include "mp.h" + +#ifdef CONFIG_MP +void ft_fixup_cpu(void *blob) +{ + int off; + __maybe_unused u64 spin_tbl_addr = (u64)get_spin_tbl_addr(); + fdt32_t *reg; + int addr_cells; + u64 val; + size_t *boot_code_size = &(__secondary_boot_code_size); + + off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpus", 4); + of_bus_default_count_cells(blob, off, &addr_cells, NULL); + + off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4); + while (off != -FDT_ERR_NOTFOUND) { + reg = (fdt32_t *)fdt_getprop(blob, off, "reg", 0); + if (reg) { + val = spin_tbl_addr; +#ifndef CONFIG_FSL_SMP_RELEASE_ALL + val += id_to_core(of_read_number(reg, addr_cells)) + * SPIN_TABLE_ELEM_SIZE; +#endif + val = cpu_to_fdt64(val); + fdt_setprop_string(blob, off, "enable-method", + "spin-table"); + fdt_setprop(blob, off, "cpu-release-addr", + &val, sizeof(val)); + } else { + puts("cpu NULL\n"); + } + off = fdt_node_offset_by_prop_value(blob, off, "device_type", + "cpu", 4); + } + + fdt_add_mem_rsv(blob, (uintptr_t)&secondary_boot_code, + *boot_code_size); +} +#endif + +void ft_cpu_setup(void *blob, bd_t *bd) +{ +#ifdef CONFIG_MP + ft_fixup_cpu(blob); +#endif +} diff --git a/arch/arm/cpu/armv8/fsl-lsch3/lowlevel.S b/arch/arm/cpu/armv8/fsl-lsch3/lowlevel.S index ad32b6c..629e6d4 100644 --- a/arch/arm/cpu/armv8/fsl-lsch3/lowlevel.S +++ b/arch/arm/cpu/armv8/fsl-lsch3/lowlevel.S @@ -8,7 +8,9 @@
#include <config.h> #include <linux/linkage.h> +#include <asm/gic.h> #include <asm/macro.h> +#include "mp.h"
ENTRY(lowlevel_init) mov x29, lr /* Save LR */ @@ -37,29 +39,119 @@ ENTRY(lowlevel_init)
branch_if_master x0, x1, 1f
+ ldr x0, =secondary_boot_func + blr x0 + +1: +2: + mov lr, x29 /* Restore LR */ + ret +ENDPROC(lowlevel_init) + + /* Keep literals not used by the secondary boot code outside it */ + .ltorg + + /* Using 64 bit alignment since the spin table is accessed as data */ + .align 4 + .global secondary_boot_code + /* Secondary Boot Code starts here */ +secondary_boot_code: + .global __spin_table +__spin_table: + .space CONFIG_MAX_CPUS*SPIN_TABLE_ELEM_SIZE + + .align 2 +ENTRY(secondary_boot_func) /* - * Slave should wait for master clearing spin table. - * This sync prevent salves observing incorrect - * value of spin table and jumping to wrong place. + * MPIDR_EL1 Fields: + * MPIDR[1:0] = AFF0_CPUID <- Core ID (0,1) + * MPIDR[7:2] = AFF0_RES + * MPIDR[15:8] = AFF1_CLUSTERID <- Cluster ID (0,1,2,3) + * MPIDR[23:16] = AFF2_CLUSTERID + * MPIDR[24] = MT + * MPIDR[29:25] = RES0 + * MPIDR[30] = U + * MPIDR[31] = ME + * MPIDR[39:32] = AFF3 + * + * Linear Processor ID (LPID) calculation from MPIDR_EL1: + * (We only use AFF0_CPUID and AFF1_CLUSTERID for now + * until AFF2_CLUSTERID and AFF3 have non-zero values) + * + * LPID = MPIDR[15:8] | MPIDR[1:0] */ -#if defined(CONFIG_GICV2) || defined(CONFIG_GICV3) -#ifdef CONFIG_GICV2 - ldr x0, =GICC_BASE + mrs x0, mpidr_el1 + ubfm x1, x0, #8, #15 + ubfm x2, x0, #0, #1 + orr x10, x2, x1, lsl #2 /* x10 has LPID */ + ubfm x9, x0, #0, #15 /* x9 contains MPIDR[15:0] */ + /* + * offset of the spin table element for this core from start of spin + * table (each elem is padded to 64 bytes) + */ + lsl x1, x10, #6 + ldr x0, =__spin_table + /* physical address of this cpus spin table element */ + add x11, x1, x0 + + str x9, [x11, #16] /* LPID */ + mov x4, #1 + str x4, [x11, #8] /* STATUS */ + dsb sy +#if defined(CONFIG_GICV3) + gic_wait_for_interrupt_m x0 #endif - bl gic_wait_for_interrupt + + bl secondary_switch_to_el2 +#ifdef CONFIG_ARMV8_SWITCH_TO_EL1 + secondary_switch_to_el1 #endif
- /* - * All processors will enter EL2 and optionally EL1. +slave_cpu: + wfe +#ifdef CONFIG_FSL_SMP_RELEASE_ALL + /* All cores are released from the address in the 1st spin table + * element */ - bl armv8_switch_to_el2 -#ifdef CONFIG_ARMV8_SWITCH_TO_EL1 - bl armv8_switch_to_el1 + ldr x1, =__spin_table + ldr x0, [x1] +#else + ldr x0, [x11] +#endif + cbz x0, slave_cpu +#ifndef CONFIG_ARMV8_SWITCH_TO_EL1 + mrs x1, sctlr_el2 +#else + mrs x1, sctlr_el1 #endif - b 2f + tbz x1, #25, cpu_is_le + rev x0, x0 /* BE to LE conversion */ +cpu_is_le: + br x0 /* branch to the given address */ +ENDPROC(secondary_boot_func)
-1: -2: - mov lr, x29 /* Restore LR */ - ret -ENDPROC(lowlevel_init) +ENTRY(secondary_switch_to_el2) + switch_el x0, 1f, 0f, 0f +0: ret +1: armv8_switch_to_el2_m x0 +ENDPROC(secondary_switch_to_el2) + +ENTRY(secondary_switch_to_el1) + switch_el x0, 0f, 1f, 0f +0: ret +1: armv8_switch_to_el1_m x0, x1 +ENDPROC(secondary_switch_to_el1) + + /* Ensure that the literals used by the secondary boot code are + * assembled within it (this is required so that we can protect + * this area with a single memreserve region + */ + .ltorg + + /* 64 bit alignment for elements accessed as data */ + .align 4 + .globl __secondary_boot_code_size + .type __secondary_boot_code_size, %object + /* Secondary Boot Code ends here */ +__secondary_boot_code_size: + .quad .-secondary_boot_code diff --git a/arch/arm/cpu/armv8/fsl-lsch3/mp.c b/arch/arm/cpu/armv8/fsl-lsch3/mp.c new file mode 100644 index 0000000..b29eda9 --- /dev/null +++ b/arch/arm/cpu/armv8/fsl-lsch3/mp.c @@ -0,0 +1,172 @@ +/* + * Copyright 2014 Freescale Semiconductor, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/system.h> +#include <asm/io.h> +#include <asm/arch-fsl-lsch3/immap_lsch3.h> +#include "mp.h" + +DECLARE_GLOBAL_DATA_PTR; + +void *get_spin_tbl_addr(void) +{ + void *ptr = (void *)&__spin_table; + + return ptr; +} + +phys_addr_t determine_mp_bootpg(void) +{ + return (phys_addr_t)&secondary_boot_code; +} + +int fsl_lsch3_wake_seconday_cores(void) +{ + struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR); + struct ccsr_reset __iomem *rst = (void *)(CONFIG_SYS_FSL_RST_ADDR); + u32 cores, cpu_up_mask = 1; + int i, timeout = 10; + u64 *table = get_spin_tbl_addr(); + + cores = cpu_mask(); + /* Clear spin table so that secondary processors + * observe the correct value after waking up from wfe. + */ + memset(table, 0, CONFIG_MAX_CPUS*SPIN_TABLE_ELEM_SIZE); + flush_dcache_range((unsigned long)table, + (unsigned long)table + + (CONFIG_MAX_CPUS*SPIN_TABLE_ELEM_SIZE)); + + printf("Waking secondary cores to start from %lx\n", gd->relocaddr); + out_le32(&gur->bootlocptrh, (u32)(gd->relocaddr >> 32)); + out_le32(&gur->bootlocptrl, (u32)gd->relocaddr); + out_le32(&gur->scratchrw[6], 1); + asm volatile("dsb st" : : : "memory"); + rst->brrl = cores; + asm volatile("dsb st" : : : "memory"); + + /* This is needed as a precautionary measure. + * If some code before this has accidentally released the secondary + * cores then the pre-bootloader code will trap them in a "wfe" unless + * the scratchrw[6] is set. In this case we need a sev here to get these + * cores moving again. + */ + asm volatile("sev"); + + while (timeout--) { + flush_dcache_range((unsigned long)table, (unsigned long)table + + CONFIG_MAX_CPUS * 64); + for (i = 1; i < CONFIG_MAX_CPUS; i++) { + if (table[i * WORDS_PER_SPIN_TABLE_ENTRY + + SPIN_TABLE_ELEM_STATUS_IDX]) + cpu_up_mask |= 1 << i; + } + if (hweight32(cpu_up_mask) == hweight32(cores)) + break; + udelay(10); + } + if (timeout <= 0) { + printf("Not all cores (0x%x) are up (0x%x)\n", + cores, cpu_up_mask); + return 1; + } + printf("All (%d) cores are up.\n", hweight32(cores)); + + return 0; +} + +int is_core_valid(unsigned int core) +{ + return !!((1 << core) & cpu_mask()); +} + +int cpu_reset(int nr) +{ + puts("Feature is not implemented.\n"); + + return 0; +} + +int cpu_disable(int nr) +{ + puts("Feature is not implemented.\n"); + + return 0; +} + +int core_to_pos(int nr) +{ + u32 cores = cpu_mask(); + int i, count = 0; + + if (nr == 0) { + return 0; + } else if (nr >= hweight32(cores)) { + puts("Not a valid core number.\n"); + return -1; + } + + for (i = 1; i < 32; i++) { + if (is_core_valid(i)) { + count++; + if (count == nr) + break; + } + } + + return count; +} + +int cpu_status(int nr) +{ + u64 *table; + int pos; + + if (nr == 0) { + table = (u64 *)get_spin_tbl_addr(); + printf("table base @ 0x%p\n", table); + } else { + pos = core_to_pos(nr); + if (pos < 0) + return -1; + table = (u64 *)get_spin_tbl_addr() + pos * + WORDS_PER_SPIN_TABLE_ENTRY; + printf("table @ 0x%p\n", table); + printf(" addr - 0x%016llx\n", + table[SPIN_TABLE_ELEM_ENTRY_ADDR_IDX]); + printf(" status - 0x%016llx\n", + table[SPIN_TABLE_ELEM_STATUS_IDX]); + printf(" lpid - 0x%016llx\n", + table[SPIN_TABLE_ELEM_LPID_IDX]); + } + + return 0; +} + +int cpu_release(int nr, int argc, char * const argv[]) +{ + u64 boot_addr; + u64 *table = (u64 *)get_spin_tbl_addr(); +#ifndef CONFIG_FSL_SMP_RELEASE_ALL + int pos; + + pos = core_to_pos(nr); + if (pos <= 0) + return -1; + + table += pos * WORDS_PER_SPIN_TABLE_ENTRY; +#endif + boot_addr = simple_strtoull(argv[0], NULL, 16); + table[SPIN_TABLE_ELEM_ENTRY_ADDR_IDX] = boot_addr; + flush_dcache_range((unsigned long)table, + (unsigned long)table + SPIN_TABLE_ELEM_SIZE); + asm volatile("dsb st"); + smp_kick_all_cpus(); /* only those with entry addr set will run */ + + return 0; +} diff --git a/arch/arm/cpu/armv8/fsl-lsch3/mp.h b/arch/arm/cpu/armv8/fsl-lsch3/mp.h new file mode 100644 index 0000000..06ac0bc --- /dev/null +++ b/arch/arm/cpu/armv8/fsl-lsch3/mp.h @@ -0,0 +1,36 @@ +/* + * Copyright 2014, Freescale Semiconductor + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _FSL_CH3_MP_H +#define _FSL_CH3_MP_H + +/* +* Each spin table element is defined as +* struct { +* uint64_t entry_addr; +* uint64_t status; +* uint64_t lpid; +* }; +* we pad this struct to 64 bytes so each entry is in its own cacheline +* the actual spin table is an array of these structures +*/ +#define SPIN_TABLE_ELEM_ENTRY_ADDR_IDX 0 +#define SPIN_TABLE_ELEM_STATUS_IDX 1 +#define SPIN_TABLE_ELEM_LPID_IDX 2 +#define WORDS_PER_SPIN_TABLE_ENTRY 8 /* pad to 64 bytes */ +#define SPIN_TABLE_ELEM_SIZE 64 + +#define id_to_core(x) ((x & 3) | (x >> 6)) +#ifndef __ASSEMBLY__ +extern u64 __spin_table[]; +extern u64 *secondary_boot_code; +extern size_t __secondary_boot_code_size; +int fsl_lsch3_wake_seconday_cores(void); +void *get_spin_tbl_addr(void); +phys_addr_t determine_mp_bootpg(void); +void secondary_boot_func(void); +#endif +#endif /* _FSL_CH3_MP_H */ diff --git a/arch/arm/cpu/armv8/transition.S b/arch/arm/cpu/armv8/transition.S index 38dea5c..ade1cde 100644 --- a/arch/arm/cpu/armv8/transition.S +++ b/arch/arm/cpu/armv8/transition.S @@ -14,70 +14,11 @@ ENTRY(armv8_switch_to_el2) switch_el x0, 1f, 0f, 0f 0: ret -1: - mov x0, #0x5b1 /* Non-secure EL0/EL1 | HVC | 64bit EL2 */ - msr scr_el3, x0 - msr cptr_el3, xzr /* Disable coprocessor traps to EL3 */ - mov x0, #0x33ff - msr cptr_el2, x0 /* Disable coprocessor traps to EL2 */ - - /* Initialize SCTLR_EL2 */ - msr sctlr_el2, xzr - - /* Return to the EL2_SP2 mode from EL3 */ - mov x0, sp - msr sp_el2, x0 /* Migrate SP */ - mrs x0, vbar_el3 - msr vbar_el2, x0 /* Migrate VBAR */ - mov x0, #0x3c9 - msr spsr_el3, x0 /* EL2_SP2 | D | A | I | F */ - msr elr_el3, lr - eret +1: armv8_switch_to_el2_m x0 ENDPROC(armv8_switch_to_el2)
ENTRY(armv8_switch_to_el1) switch_el x0, 0f, 1f, 0f 0: ret -1: - /* Initialize Generic Timers */ - mrs x0, cnthctl_el2 - orr x0, x0, #0x3 /* Enable EL1 access to timers */ - msr cnthctl_el2, x0 - msr cntvoff_el2, xzr - mrs x0, cntkctl_el1 - orr x0, x0, #0x3 /* Enable EL0 access to timers */ - msr cntkctl_el1, x0 - - /* Initilize MPID/MPIDR registers */ - mrs x0, midr_el1 - mrs x1, mpidr_el1 - msr vpidr_el2, x0 - msr vmpidr_el2, x1 - - /* Disable coprocessor traps */ - mov x0, #0x33ff - msr cptr_el2, x0 /* Disable coprocessor traps to EL2 */ - msr hstr_el2, xzr /* Disable coprocessor traps to EL2 */ - mov x0, #3 << 20 - msr cpacr_el1, x0 /* Enable FP/SIMD at EL1 */ - - /* Initialize HCR_EL2 */ - mov x0, #(1 << 31) /* 64bit EL1 */ - orr x0, x0, #(1 << 29) /* Disable HVC */ - msr hcr_el2, x0 - - /* SCTLR_EL1 initialization */ - mov x0, #0x0800 - movk x0, #0x30d0, lsl #16 - msr sctlr_el1, x0 - - /* Return to the EL1_SP1 mode from EL2 */ - mov x0, sp - msr sp_el1, x0 /* Migrate SP */ - mrs x0, vbar_el2 - msr vbar_el1, x0 /* Migrate VBAR */ - mov x0, #0x3c5 - msr spsr_el2, x0 /* EL1_SP1 | D | A | I | F */ - msr elr_el2, lr - eret +1: armv8_switch_to_el1_m x0, x1 ENDPROC(armv8_switch_to_el1) diff --git a/arch/arm/include/asm/arch-fsl-lsch3/config.h b/arch/arm/include/asm/arch-fsl-lsch3/config.h index b17410a..3c1ee80 100644 --- a/arch/arm/include/asm/arch-fsl-lsch3/config.h +++ b/arch/arm/include/asm/arch-fsl-lsch3/config.h @@ -8,7 +8,7 @@ #define _ASM_ARMV8_FSL_LSCH3_CONFIG_
#include <fsl_ddrc_version.h> - +#define CONFIG_MP #define CONFIG_SYS_FSL_OCRAM_BASE 0x18000000 /* initial RAM */ /* Link Definitions */ #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_FSL_OCRAM_BASE + 0xfff0) @@ -18,6 +18,7 @@ #define CONFIG_SYS_FSL_DDR2_ADDR (CONFIG_SYS_IMMR + 0x00090000) #define CONFIG_SYS_FSL_GUTS_ADDR (CONFIG_SYS_IMMR + 0x00E00000) #define CONFIG_SYS_FSL_PMU_ADDR (CONFIG_SYS_IMMR + 0x00E30000) +#define CONFIG_SYS_FSL_RST_ADDR (CONFIG_SYS_IMMR + 0x00E60000) #define CONFIG_SYS_FSL_CH3_CLK_GRPA_ADDR (CONFIG_SYS_IMMR + 0x00300000) #define CONFIG_SYS_FSL_CH3_CLK_GRPB_ADDR (CONFIG_SYS_IMMR + 0x00310000) #define CONFIG_SYS_FSL_CH3_CLK_CTRL_ADDR (CONFIG_SYS_IMMR + 0x00370000) diff --git a/arch/arm/include/asm/arch-fsl-lsch3/immap_lsch3.h b/arch/arm/include/asm/arch-fsl-lsch3/immap_lsch3.h index 18e66bd..ee1d651 100644 --- a/arch/arm/include/asm/arch-fsl-lsch3/immap_lsch3.h +++ b/arch/arm/include/asm/arch-fsl-lsch3/immap_lsch3.h @@ -113,4 +113,39 @@ struct ccsr_clk_ctrl { u8 res_04[0x20-0x04]; } clkcncsr[8]; }; + +struct ccsr_reset { + u32 rstcr; /* 0x000 */ + u32 rstcrsp; /* 0x004 */ + u8 res_008[0x10-0x08]; /* 0x008 */ + u32 rstrqmr1; /* 0x010 */ + u32 rstrqmr2; /* 0x014 */ + u32 rstrqsr1; /* 0x018 */ + u32 rstrqsr2; /* 0x01c */ + u32 rstrqwdtmrl; /* 0x020 */ + u32 rstrqwdtmru; /* 0x024 */ + u8 res_028[0x30-0x28]; /* 0x028 */ + u32 rstrqwdtsrl; /* 0x030 */ + u32 rstrqwdtsru; /* 0x034 */ + u8 res_038[0x60-0x38]; /* 0x038 */ + u32 brrl; /* 0x060 */ + u32 brru; /* 0x064 */ + u8 res_068[0x80-0x68]; /* 0x068 */ + u32 pirset; /* 0x080 */ + u32 pirclr; /* 0x084 */ + u8 res_088[0x90-0x88]; /* 0x088 */ + u32 brcorenbr; /* 0x090 */ + u8 res_094[0x100-0x94]; /* 0x094 */ + u32 rcw_reqr; /* 0x100 */ + u32 rcw_completion; /* 0x104 */ + u8 res_108[0x110-0x108]; /* 0x108 */ + u32 pbi_reqr; /* 0x110 */ + u32 pbi_completion; /* 0x114 */ + u8 res_118[0xa00-0x118]; /* 0x118 */ + u32 qmbm_warmrst; /* 0xa00 */ + u32 soc_warmrst; /* 0xa04 */ + u8 res_a08[0xbf8-0xa08]; /* 0xa08 */ + u32 ip_rev1; /* 0xbf8 */ + u32 ip_rev2; /* 0xbfc */ +}; #endif /* __ARCH_FSL_LSCH3_IMMAP_H */ diff --git a/arch/arm/include/asm/macro.h b/arch/arm/include/asm/macro.h index f77e4b8..0009c28 100644 --- a/arch/arm/include/asm/macro.h +++ b/arch/arm/include/asm/macro.h @@ -105,6 +105,98 @@ lr .req x30 cbz \xreg1, \master_label .endm
+.macro armv8_switch_to_el2_m, xreg1 + mov \xreg1, #0x5b1 /* Non-secure EL0/EL1 | HVC | 64bit EL2 */ + msr scr_el3, \xreg1 + msr cptr_el3, xzr /* Disable coprocessor traps to EL3 */ + mov \xreg1, #0x33ff + msr cptr_el2, \xreg1 /* Disable coprocessor traps to EL2 */ + + /* Initialize SCTLR_EL2 */ + /* + * setting RES1 bits (29,28,23,22,18,16,11,5,4) to 1 + * and RES0 bits (31,30,27,26,24,21,20,17,15-13,10-6) + + * EE,WXN,I,SA,C,A,M to 0 + */ + mov \xreg1, #0x0830 + movk \xreg1, #0x30C5, lsl #16 + msr sctlr_el2, \xreg1 + + /* Return to the EL2_SP2 mode from EL3 */ + mov \xreg1, sp + msr sp_el2, \xreg1 /* Migrate SP */ + mrs \xreg1, vbar_el3 + msr vbar_el2, \xreg1 /* Migrate VBAR */ + mov \xreg1, #0x3c9 + msr spsr_el3, \xreg1 /* EL2_SP2 | D | A | I | F */ + msr elr_el3, lr + eret +.endm + +.macro armv8_switch_to_el1_m, xreg1, xreg2 + /* Initialize Generic Timers */ + mrs \xreg1, cnthctl_el2 + orr \xreg1, \xreg1, #0x3 /* Enable EL1 access to timers */ + msr cnthctl_el2, \xreg1 + msr cntvoff_el2, xzr + + /* Initilize MPID/MPIDR registers */ + mrs \xreg1, midr_el1 + mrs \xreg2, mpidr_el1 + msr vpidr_el2, \xreg1 + msr vmpidr_el2, \xreg2 + + /* Disable coprocessor traps */ + mov \xreg1, #0x33ff + msr cptr_el2, \xreg1 /* Disable coprocessor traps to EL2 */ + msr hstr_el2, xzr /* Disable coprocessor traps to EL2 */ + mov \xreg1, #3 << 20 + msr cpacr_el1, \xreg1 /* Enable FP/SIMD at EL1 */ + + /* Initialize HCR_EL2 */ + mov \xreg1, #(1 << 31) /* 64bit EL1 */ + orr \xreg1, \xreg1, #(1 << 29) /* Disable HVC */ + msr hcr_el2, \xreg1 + + /* SCTLR_EL1 initialization */ + /* + * setting RES1 bits (29,28,23,22,20,11) to 1 + * and RES0 bits (31,30,27,21,17,13,10,6) + + * UCI,EE,EOE,WXN,nTWE,nTWI,UCT,DZE,I,UMA,SED,ITD, + * CP15BEN,SA0,SA,C,A,M to 0 + */ + mov \xreg1, #0x0800 + movk \xreg1, #0x30d0, lsl #16 + msr sctlr_el1, \xreg1 + + /* Return to the EL1_SP1 mode from EL2 */ + mov \xreg1, sp + msr sp_el1, \xreg1 /* Migrate SP */ + mrs \xreg1, vbar_el2 + msr vbar_el1, \xreg1 /* Migrate VBAR */ + mov \xreg1, #0x3c5 + msr spsr_el2, \xreg1 /* EL1_SP1 | D | A | I | F */ + msr elr_el2, lr + eret +.endm + +#if defined(CONFIG_GICV3) +.macro gic_wait_for_interrupt_m xreg1 +0 : wfi + mrs \xreg1, ICC_IAR1_EL1 + msr ICC_EOIR1_EL1, \xreg1 + cbnz \xreg1, 0b +.endm +#elif defined(CONFIG_GICV2) +.macro gic_wait_for_interrupt_m xreg1, wreg2 +0 : wfi + ldr \wreg2, [\xreg1, GICC_AIAR] + str \wreg2, [\xreg1, GICC_AEOIR] + and \wreg2, \wreg2, #3ff + cbnz \wreg2, 0b +.endm +#endif + #endif /* CONFIG_ARM64 */
#endif /* __ASSEMBLY__ */ diff --git a/arch/arm/lib/gic_64.S b/arch/arm/lib/gic_64.S index d56396e..a3e18f7 100644 --- a/arch/arm/lib/gic_64.S +++ b/arch/arm/lib/gic_64.S @@ -10,8 +10,8 @@ #include <asm-offsets.h> #include <config.h> #include <linux/linkage.h> -#include <asm/macro.h> #include <asm/gic.h> +#include <asm/macro.h>
/************************************************************************* @@ -181,14 +181,10 @@ ENDPROC(gic_kick_secondary_cpus) * *************************************************************************/ ENTRY(gic_wait_for_interrupt) -0: wfi #if defined(CONFIG_GICV3) - mrs x9, ICC_IAR1_EL1 - msr ICC_EOIR1_EL1, x9 + gic_wait_for_interrupt_m x9 #elif defined(CONFIG_GICV2) - ldr w9, [x0, GICC_AIAR] - str w9, [x0, GICC_AEOIR] + gic_wait_for_interrupt_m x0, w9 #endif - cbnz w9, 0b ret ENDPROC(gic_wait_for_interrupt) diff --git a/common/board_f.c b/common/board_f.c index d5e7622..79668f4 100644 --- a/common/board_f.c +++ b/common/board_f.c @@ -43,7 +43,7 @@ #include <watchdog.h> #include <asm/errno.h> #include <asm/io.h> -#ifdef CONFIG_MP +#if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500)) #include <asm/mp.h> #endif #include <asm/sections.h>