diff options
Diffstat (limited to 'arch/arc')
| -rw-r--r-- | arch/arc/Kconfig | 3 | ||||
| -rw-r--r-- | arch/arc/Makefile | 2 | ||||
| -rw-r--r-- | arch/arc/config.mk | 4 | ||||
| -rw-r--r-- | arch/arc/cpu/arc700/Makefile | 13 | ||||
| -rw-r--r-- | arch/arc/cpu/arcv1/Makefile | 7 | ||||
| -rw-r--r-- | arch/arc/cpu/arcv1/config.mk (renamed from arch/arc/cpu/arc700/config.mk) | 0 | ||||
| -rw-r--r-- | arch/arc/cpu/arcv1/start.S (renamed from arch/arc/cpu/arc700/start.S) | 77 | ||||
| -rw-r--r-- | arch/arc/cpu/u-boot.lds (renamed from arch/arc/cpu/arc700/u-boot.lds) | 15 | ||||
| -rw-r--r-- | arch/arc/include/asm/arcregs.h | 2 | ||||
| -rw-r--r-- | arch/arc/include/asm/sections.h | 3 | ||||
| -rw-r--r-- | arch/arc/lib/Makefile | 6 | ||||
| -rw-r--r-- | arch/arc/lib/cache.c (renamed from arch/arc/cpu/arc700/cache.c) | 29 | ||||
| -rw-r--r-- | arch/arc/lib/cpu.c (renamed from arch/arc/cpu/arc700/cpu.c) | 0 | ||||
| -rw-r--r-- | arch/arc/lib/interrupts.c (renamed from arch/arc/cpu/arc700/interrupts.c) | 3 | ||||
| -rw-r--r-- | arch/arc/lib/relocate.c | 19 | ||||
| -rw-r--r-- | arch/arc/lib/reset.c (renamed from arch/arc/cpu/arc700/reset.c) | 0 | ||||
| -rw-r--r-- | arch/arc/lib/sections.c | 2 | ||||
| -rw-r--r-- | arch/arc/lib/timer.c (renamed from arch/arc/cpu/arc700/timer.c) | 0 |
18 files changed, 123 insertions, 62 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index d3ef58b..c6b1efe 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -4,6 +4,9 @@ menu "ARC architecture" config SYS_ARCH default "arc" +config SYS_CPU + default "arcv1" + choice prompt "Target select" diff --git a/arch/arc/Makefile b/arch/arc/Makefile index 03ea6db..a59231e 100644 --- a/arch/arc/Makefile +++ b/arch/arc/Makefile @@ -2,8 +2,6 @@ # SPDX-License-Identifier: GPL-2.0+ # -head-y := arch/arc/cpu/$(CPU)/start.o - libs-y += arch/arc/cpu/$(CPU)/ libs-y += arch/arc/lib/ diff --git a/arch/arc/config.mk b/arch/arc/config.mk index e408800..5321987 100644 --- a/arch/arc/config.mk +++ b/arch/arc/config.mk @@ -21,6 +21,10 @@ ifeq ($(CROSS_COMPILE),) CROSS_COMPILE := $(ARC_CROSS_COMPILE) endif +ifdef CONFIG_ARC_MMU_VER +CONFIG_MMU = 1 +endif + PLATFORM_CPPFLAGS += -ffixed-r25 -D__ARC__ -gdwarf-2 # Needed for relocation diff --git a/arch/arc/cpu/arc700/Makefile b/arch/arc/cpu/arc700/Makefile deleted file mode 100644 index cdc5002..0000000 --- a/arch/arc/cpu/arc700/Makefile +++ /dev/null @@ -1,13 +0,0 @@ -# -# Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved. -# -# SPDX-License-Identifier: GPL-2.0+ -# - -extra-y += start.o - -obj-y += cache.o -obj-y += cpu.o -obj-y += interrupts.o -obj-y += reset.o -obj-y += timer.o diff --git a/arch/arc/cpu/arcv1/Makefile b/arch/arc/cpu/arcv1/Makefile new file mode 100644 index 0000000..3704ebe --- /dev/null +++ b/arch/arc/cpu/arcv1/Makefile @@ -0,0 +1,7 @@ +# +# Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved. +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-y += start.o diff --git a/arch/arc/cpu/arc700/config.mk b/arch/arc/cpu/arcv1/config.mk index 3206ff4..3206ff4 100644 --- a/arch/arc/cpu/arc700/config.mk +++ b/arch/arc/cpu/arcv1/config.mk diff --git a/arch/arc/cpu/arc700/start.S b/arch/arc/cpu/arcv1/start.S index 563513b..01cfba4 100644 --- a/arch/arc/cpu/arc700/start.S +++ b/arch/arc/cpu/arcv1/start.S @@ -57,11 +57,13 @@ .endm .macro SAVE_ALL_SYS - + /* saving %r0 to reg->r0 in advance since we read %ecr into it */ + st %r0, [%sp, -8] + lr %r0, [%ecr] /* all stack addressing is manual so far */ st %r0, [%sp] - lr %r0, [%ecr] - st %r0, [%sp, 8] /* ECR */ - st %sp, [%sp, 4] + st %sp, [%sp, -4] + /* now move %sp to reg->r0 position so we can do "push" automatically */ + sub %sp, %sp, 8 SAVE_R1_TO_R24 PUSH %r25 @@ -76,11 +78,21 @@ PUSHAX %erbta .endm +.macro SAVE_EXCEPTION_SOURCE +#ifdef CONFIG_MMU + /* If MMU exists exception faulting address is loaded in EFA reg */ + lr %r0, [%efa] +#else + /* Otherwise in ERET (exception return) reg */ + lr %r0, [%eret] +#endif +.endm + +.section .ivt, "ax",@progbits .align 4 -.globl _start -_start: +_ivt: /* Critical system events */ - j reset /* 0 - 0x000 */ + j _start /* 0 - 0x000 */ j memory_error /* 1 - 0x008 */ j instruction_error /* 2 - 0x010 */ @@ -98,15 +110,37 @@ _start: j EV_Trap /* 0x128, Trap exception (0x25) */ j EV_Extension /* 0x130, Extn Intruction Excp (0x26) */ +.text +.globl _start +_start: + /* Setup interrupt vector base that matches "__text_start" */ + sr __ivt_start, [ARC_AUX_INTR_VEC_BASE] + + /* Setup stack pointer */ + mov %sp, CONFIG_SYS_INIT_SP_ADDR + mov %fp, %sp + + /* Clear bss */ + mov %r0, __bss_start + mov %r1, __bss_end + +clear_bss: + st.ab 0, [%r0, 4] + brlt %r0, %r1, clear_bss + + /* Zero the one and only argument of "board_init_f" */ + mov_s %r0, 0 + j board_init_f + memory_error: SAVE_ALL_SYS - lr %r0, [%efa] + SAVE_EXCEPTION_SOURCE mov %r1, %sp j do_memory_error instruction_error: SAVE_ALL_SYS - lr %r0, [%efa] + SAVE_EXCEPTION_SOURCE mov %r1, %sp j do_instruction_error @@ -117,7 +151,7 @@ interrupt_handler: EV_MachineCheck: SAVE_ALL_SYS - lr %r0, [%efa] + SAVE_EXCEPTION_SOURCE mov %r1, %sp j do_machine_check_fault @@ -133,7 +167,7 @@ EV_TLBMissD: EV_TLBProtV: SAVE_ALL_SYS - lr %r0, [%efa] + SAVE_EXCEPTION_SOURCE mov %r1, %sp j do_tlb_prot_violation @@ -152,27 +186,6 @@ EV_Extension: mov %r0, %sp j do_extension - -reset: - /* Setup interrupt vector base that matches "__text_start" */ - sr __text_start, [ARC_AUX_INTR_VEC_BASE] - - /* Setup stack pointer */ - mov %sp, CONFIG_SYS_INIT_SP_ADDR - mov %fp, %sp - - /* Clear bss */ - mov %r0, __bss_start - mov %r1, __bss_end - -clear_bss: - st.ab 0, [%r0, 4] - brlt %r0, %r1, clear_bss - - /* Zero the one and only argument of "board_init_f" */ - mov_s %r0, 0 - j board_init_f - /* * void relocate_code (addr_sp, gd, addr_moni) * diff --git a/arch/arc/cpu/arc700/u-boot.lds b/arch/arc/cpu/u-boot.lds index 2d01b21..ccddbf7 100644 --- a/arch/arc/cpu/arc700/u-boot.lds +++ b/arch/arc/cpu/u-boot.lds @@ -13,7 +13,6 @@ SECTIONS .text : { *(.__text_start) *(.__image_copy_start) - CPUDIR/start.o (.text*) *(.text*) } @@ -23,6 +22,20 @@ SECTIONS *(.__text_end) } + . = ALIGN(1024); + .ivt_start : { + *(.__ivt_start) + } + + .ivt : + { + *(.ivt) + } + + .ivt_end : { + *(.__ivt_end) + } + . = ALIGN(4); .rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) diff --git a/arch/arc/include/asm/arcregs.h b/arch/arc/include/asm/arcregs.h index 5d48d11..8ace87f 100644 --- a/arch/arc/include/asm/arcregs.h +++ b/arch/arc/include/asm/arcregs.h @@ -24,6 +24,7 @@ #if (CONFIG_ARC_MMU_VER > 2) #define ARC_AUX_IC_PTAG 0x1E #endif +#define ARC_BCR_IC_BUILD 0x77 /* Timer related auxiliary registers */ #define ARC_AUX_TIMER0_CNT 0x21 /* Timer 0 count */ @@ -42,6 +43,7 @@ #if (CONFIG_ARC_MMU_VER > 2) #define ARC_AUX_DC_PTAG 0x5C #endif +#define ARC_BCR_DC_BUILD 0x72 #ifndef __ASSEMBLY__ /* Accessors for auxiliary registers */ diff --git a/arch/arc/include/asm/sections.h b/arch/arc/include/asm/sections.h index 18484a1..b8f2a85 100644 --- a/arch/arc/include/asm/sections.h +++ b/arch/arc/include/asm/sections.h @@ -10,5 +10,8 @@ #include <asm-generic/sections.h> extern ulong __text_end; +extern ulong __ivt_start; +extern ulong __ivt_end; +extern ulong __image_copy_start; #endif /* __ASM_ARC_SECTIONS_H */ diff --git a/arch/arc/lib/Makefile b/arch/arc/lib/Makefile index 7675f85..bae4419 100644 --- a/arch/arc/lib/Makefile +++ b/arch/arc/lib/Makefile @@ -4,6 +4,9 @@ # SPDX-License-Identifier: GPL-2.0+ # +obj-y += cache.o +obj-y += cpu.o +obj-y += interrupts.o obj-y += sections.o obj-y += relocate.o obj-y += strchr-700.o @@ -13,4 +16,7 @@ obj-y += strlen.o obj-y += memcmp.o obj-y += memcpy-700.o obj-y += memset.o +obj-y += reset.o +obj-y += timer.o + obj-$(CONFIG_CMD_BOOTM) += bootm.o diff --git a/arch/arc/cpu/arc700/cache.c b/arch/arc/lib/cache.c index 39d522d..fa19a13 100644 --- a/arch/arc/cpu/arc700/cache.c +++ b/arch/arc/lib/cache.c @@ -14,21 +14,34 @@ #define DC_CTRL_CACHE_DISABLE (1 << 0) #define DC_CTRL_INV_MODE_FLUSH (1 << 6) #define DC_CTRL_FLUSH_STATUS (1 << 8) +#define CACHE_VER_NUM_MASK 0xF int icache_status(void) { + /* If no cache in CPU exit immediately */ + if (!(read_aux_reg(ARC_BCR_IC_BUILD) & CACHE_VER_NUM_MASK)) + return 0; + return (read_aux_reg(ARC_AUX_IC_CTRL) & IC_CTRL_CACHE_DISABLE) != IC_CTRL_CACHE_DISABLE; } void icache_enable(void) { + /* If no cache in CPU exit immediately */ + if (!(read_aux_reg(ARC_BCR_IC_BUILD) & CACHE_VER_NUM_MASK)) + return; + write_aux_reg(ARC_AUX_IC_CTRL, read_aux_reg(ARC_AUX_IC_CTRL) & ~IC_CTRL_CACHE_DISABLE); } void icache_disable(void) { + /* If no cache in CPU exit immediately */ + if (!(read_aux_reg(ARC_BCR_IC_BUILD) & CACHE_VER_NUM_MASK)) + return; + write_aux_reg(ARC_AUX_IC_CTRL, read_aux_reg(ARC_AUX_IC_CTRL) | IC_CTRL_CACHE_DISABLE); } @@ -43,24 +56,40 @@ void invalidate_icache_all(void) int dcache_status(void) { + /* If no cache in CPU exit immediately */ + if (!(read_aux_reg(ARC_BCR_DC_BUILD) & CACHE_VER_NUM_MASK)) + return 0; + return (read_aux_reg(ARC_AUX_DC_CTRL) & DC_CTRL_CACHE_DISABLE) != DC_CTRL_CACHE_DISABLE; } void dcache_enable(void) { + /* If no cache in CPU exit immediately */ + if (!(read_aux_reg(ARC_BCR_DC_BUILD) & CACHE_VER_NUM_MASK)) + return; + write_aux_reg(ARC_AUX_DC_CTRL, read_aux_reg(ARC_AUX_DC_CTRL) & ~(DC_CTRL_INV_MODE_FLUSH | DC_CTRL_CACHE_DISABLE)); } void dcache_disable(void) { + /* If no cache in CPU exit immediately */ + if (!(read_aux_reg(ARC_BCR_DC_BUILD) & CACHE_VER_NUM_MASK)) + return; + write_aux_reg(ARC_AUX_DC_CTRL, read_aux_reg(ARC_AUX_DC_CTRL) | DC_CTRL_CACHE_DISABLE); } void flush_dcache_all(void) { + /* If no cache in CPU exit immediately */ + if (!(read_aux_reg(ARC_BCR_DC_BUILD) & CACHE_VER_NUM_MASK)) + return; + /* Do flush of entire cache */ write_aux_reg(ARC_AUX_DC_FLSH, 1); diff --git a/arch/arc/cpu/arc700/cpu.c b/arch/arc/lib/cpu.c index 50634b8..50634b8 100644 --- a/arch/arc/cpu/arc700/cpu.c +++ b/arch/arc/lib/cpu.c diff --git a/arch/arc/cpu/arc700/interrupts.c b/arch/arc/lib/interrupts.c index d93a6eb..d7cab3b 100644 --- a/arch/arc/cpu/arc700/interrupts.c +++ b/arch/arc/lib/interrupts.c @@ -23,7 +23,7 @@ int interrupt_init(void) int disable_interrupts(void) { int status = read_aux_reg(ARC_AUX_STATUS32); - int state = (status | E1_MASK | E2_MASK) ? 1 : 0; + int state = (status & (E1_MASK | E2_MASK)) ? 1 : 0; status &= ~(E1_MASK | E2_MASK); /* STATUS32 register is updated indirectly with "FLAG" instruction */ @@ -61,6 +61,7 @@ static void print_reg_file(long *reg_rev, int start_num) void show_regs(struct pt_regs *regs) { + printf("ECR:\t0x%08lx\n", regs->ecr); printf("RET:\t0x%08lx\nBLINK:\t0x%08lx\nSTAT32:\t0x%08lx\n", regs->ret, regs->blink, regs->status32); printf("GP: 0x%08lx\t r25: 0x%08lx\t\n", regs->r26, regs->r25); diff --git a/arch/arc/lib/relocate.c b/arch/arc/lib/relocate.c index 2482bcd..7797782 100644 --- a/arch/arc/lib/relocate.c +++ b/arch/arc/lib/relocate.c @@ -26,7 +26,7 @@ int do_elf_reloc_fixups(void) offset_ptr_rom = (Elf32_Addr *)re_src->r_offset; /* Check that the location of the relocation is in .text */ - if (offset_ptr_rom >= (Elf32_Addr *)CONFIG_SYS_TEXT_BASE && + if (offset_ptr_rom >= (Elf32_Addr *)&__image_copy_start && offset_ptr_rom > last_offset) { unsigned int val; /* Switch to the in-RAM version */ @@ -44,29 +44,22 @@ int do_elf_reloc_fixups(void) #ifdef __LITTLE_ENDIAN__ /* If location in ".text" section swap value */ if ((unsigned int)offset_ptr_rom < - (unsigned int)&__text_end) + (unsigned int)&__ivt_end) val = (val << 16) | (val >> 16); #endif - /* Check that the target points into .text */ - if (val >= CONFIG_SYS_TEXT_BASE && val <= - (unsigned int)&__bss_end) { + /* Check that the target points into executable */ + if (val >= (unsigned int)&__image_copy_start && val <= + (unsigned int)&__image_copy_end) { val += gd->reloc_off; #ifdef __LITTLE_ENDIAN__ /* If location in ".text" section swap value */ if ((unsigned int)offset_ptr_rom < - (unsigned int)&__text_end) + (unsigned int)&__ivt_end) val = (val << 16) | (val >> 16); #endif memcpy(offset_ptr_ram, &val, sizeof(int)); - } else { - debug(" %p: rom reloc %x, ram %p, value %x, limit %x\n", - re_src, re_src->r_offset, offset_ptr_ram, - val, (unsigned int)&__bss_end); } - } else { - debug(" %p: rom reloc %x, last %p\n", re_src, - re_src->r_offset, last_offset); } last_offset = offset_ptr_rom; diff --git a/arch/arc/cpu/arc700/reset.c b/arch/arc/lib/reset.c index 98ebf1d..98ebf1d 100644 --- a/arch/arc/cpu/arc700/reset.c +++ b/arch/arc/lib/reset.c diff --git a/arch/arc/lib/sections.c b/arch/arc/lib/sections.c index b0b46a4..a72c694 100644 --- a/arch/arc/lib/sections.c +++ b/arch/arc/lib/sections.c @@ -19,3 +19,5 @@ char __rel_dyn_end[0] __attribute__((section(".__rel_dyn_end"))); char __text_start[0] __attribute__((section(".__text_start"))); char __text_end[0] __attribute__((section(".__text_end"))); char __init_end[0] __attribute__((section(".__init_end"))); +char __ivt_start[0] __attribute__((section(".__ivt_start"))); +char __ivt_end[0] __attribute__((section(".__ivt_end"))); diff --git a/arch/arc/cpu/arc700/timer.c b/arch/arc/lib/timer.c index a0acbbc..a0acbbc 100644 --- a/arch/arc/cpu/arc700/timer.c +++ b/arch/arc/lib/timer.c |