From: Alexey Brodkin Date: Thu, 25 Dec 2014 15:54:58 +0000 (+0300) Subject: arc: rename "arc700" in "arcv1" X-Git-Tag: v2015.04-rc1~68^2 X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=fdff23702a361e89a153222233231af4d00d6e2a;p=u-boot arc: rename "arc700" in "arcv1" As a preparation to ARCv2 port submission we rename "arc700" folder to "arcv1" which stands for ARCv1 ISA also known as ARCompact. This will allow us to add more flavours of binary-compatible ARCv1 CPUs like ARC600 if needed later on and all required ARCv2 CPUs (which are binary incompatible with ARCv1) in "arcv2" folder in subsequent commits. Signed-off-by: Alexey Brodkin Signed-off-by: Igor Guryanov --- diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index 6a77b8f34c..c6b1efeb8b 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -5,7 +5,7 @@ config SYS_ARCH default "arc" config SYS_CPU - default "arc700" + default "arcv1" choice prompt "Target select" diff --git a/arch/arc/cpu/arc700/Makefile b/arch/arc/cpu/arc700/Makefile deleted file mode 100644 index 3704ebeeae..0000000000 --- a/arch/arc/cpu/arc700/Makefile +++ /dev/null @@ -1,7 +0,0 @@ -# -# 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/arc700/config.mk deleted file mode 100644 index 3206ff47e3..0000000000 --- a/arch/arc/cpu/arc700/config.mk +++ /dev/null @@ -1,7 +0,0 @@ -# -# Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved. -# -# SPDX-License-Identifier: GPL-2.0+ -# - -PLATFORM_CPPFLAGS += -mA7 diff --git a/arch/arc/cpu/arc700/start.S b/arch/arc/cpu/arc700/start.S deleted file mode 100644 index 01cfba4933..0000000000 --- a/arch/arc/cpu/arc700/start.S +++ /dev/null @@ -1,254 +0,0 @@ -/* - * Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include - -/* - * Note on the LD/ST addressing modes with address register write-back - * - * LD.a same as LD.aw - * - * LD.a reg1, [reg2, x] => Pre Incr - * Eff Addr for load = [reg2 + x] - * - * LD.ab reg1, [reg2, x] => Post Incr - * Eff Addr for load = [reg2] - */ - -.macro PUSH reg - st.a \reg, [%sp, -4] -.endm - -.macro PUSHAX aux - lr %r9, [\aux] - PUSH %r9 -.endm - -.macro SAVE_R1_TO_R24 - PUSH %r1 - PUSH %r2 - PUSH %r3 - PUSH %r4 - PUSH %r5 - PUSH %r6 - PUSH %r7 - PUSH %r8 - PUSH %r9 - PUSH %r10 - PUSH %r11 - PUSH %r12 - PUSH %r13 - PUSH %r14 - PUSH %r15 - PUSH %r16 - PUSH %r17 - PUSH %r18 - PUSH %r19 - PUSH %r20 - PUSH %r21 - PUSH %r22 - PUSH %r23 - PUSH %r24 -.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] - 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 - PUSH %gp - PUSH %fp - PUSH %blink - PUSHAX %eret - PUSHAX %erstatus - PUSH %lp_count - PUSHAX %lp_end - PUSHAX %lp_start - 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 -_ivt: - /* Critical system events */ - j _start /* 0 - 0x000 */ - j memory_error /* 1 - 0x008 */ - j instruction_error /* 2 - 0x010 */ - - /* Device interrupts */ -.rept 29 - j interrupt_handler /* 3:31 - 0x018:0xF8 */ -.endr - /* Exceptions */ - j EV_MachineCheck /* 0x100, Fatal Machine check (0x20) */ - j EV_TLBMissI /* 0x108, Intruction TLB miss (0x21) */ - j EV_TLBMissD /* 0x110, Data TLB miss (0x22) */ - j EV_TLBProtV /* 0x118, Protection Violation (0x23) - or Misaligned Access */ - j EV_PrivilegeV /* 0x120, Privilege Violation (0x24) */ - 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 - SAVE_EXCEPTION_SOURCE - mov %r1, %sp - j do_memory_error - -instruction_error: - SAVE_ALL_SYS - SAVE_EXCEPTION_SOURCE - mov %r1, %sp - j do_instruction_error - -interrupt_handler: - /* Todo - save and restore CPU context when interrupts will be in use */ - bl do_interrupt_handler - rtie - -EV_MachineCheck: - SAVE_ALL_SYS - SAVE_EXCEPTION_SOURCE - mov %r1, %sp - j do_machine_check_fault - -EV_TLBMissI: - SAVE_ALL_SYS - mov %r0, %sp - j do_itlb_miss - -EV_TLBMissD: - SAVE_ALL_SYS - mov %r0, %sp - j do_dtlb_miss - -EV_TLBProtV: - SAVE_ALL_SYS - SAVE_EXCEPTION_SOURCE - mov %r1, %sp - j do_tlb_prot_violation - -EV_PrivilegeV: - SAVE_ALL_SYS - mov %r0, %sp - j do_privilege_violation - -EV_Trap: - SAVE_ALL_SYS - mov %r0, %sp - j do_trap - -EV_Extension: - SAVE_ALL_SYS - mov %r0, %sp - j do_extension - -/* - * void relocate_code (addr_sp, gd, addr_moni) - * - * This "function" does not return, instead it continues in RAM - * after relocating the monitor code. - * - * r0 = start_addr_sp - * r1 = new__gd - * r2 = relocaddr - */ -.align 4 -.globl relocate_code -relocate_code: - /* - * r0-r12 might be clobbered by C functions - * so we use r13-r16 for storage here - */ - mov %r13, %r0 /* save addr_sp */ - mov %r14, %r1 /* save addr of gd */ - mov %r15, %r2 /* save addr of destination */ - - mov %r16, %r2 /* %r9 - relocation offset */ - sub %r16, %r16, __image_copy_start - -/* Set up the stack */ -stack_setup: - mov %sp, %r13 - mov %fp, %sp - -/* Check if monitor is loaded right in place for relocation */ - mov %r0, __image_copy_start - cmp %r0, %r15 /* skip relocation if code loaded */ - bz do_board_init_r /* in target location already */ - -/* Copy data (__image_copy_start - __image_copy_end) to new location */ - mov %r1, %r15 - mov %r2, __image_copy_end - sub %r2, %r2, %r0 /* r3 <- amount of bytes to copy */ - asr %r2, %r2, 2 /* r3 <- amount of words to copy */ - mov %lp_count, %r2 - lp copy_end - ld.ab %r2,[%r0,4] - st.ab %r2,[%r1,4] -copy_end: - -/* Fix relocations related issues */ - bl do_elf_reloc_fixups -#ifndef CONFIG_SYS_ICACHE_OFF - bl invalidate_icache_all -#endif -#ifndef CONFIG_SYS_DCACHE_OFF - bl flush_dcache_all -#endif - -/* Update position of intterupt vector table */ - lr %r0, [ARC_AUX_INTR_VEC_BASE] /* Read current position */ - add %r0, %r0, %r16 /* Update address */ - sr %r0, [ARC_AUX_INTR_VEC_BASE] /* Write new position */ - -do_board_init_r: -/* Prepare for exection of "board_init_r" in relocated monitor */ - mov %r2, board_init_r /* old address of "board_init_r()" */ - add %r2, %r2, %r16 /* new address of "board_init_r()" */ - mov %r0, %r14 /* 1-st parameter: gd_t */ - mov %r1, %r15 /* 2-nd parameter: dest_addr */ - j [%r2] diff --git a/arch/arc/cpu/arcv1/Makefile b/arch/arc/cpu/arcv1/Makefile new file mode 100644 index 0000000000..3704ebeeae --- /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/arcv1/config.mk b/arch/arc/cpu/arcv1/config.mk new file mode 100644 index 0000000000..3206ff47e3 --- /dev/null +++ b/arch/arc/cpu/arcv1/config.mk @@ -0,0 +1,7 @@ +# +# Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved. +# +# SPDX-License-Identifier: GPL-2.0+ +# + +PLATFORM_CPPFLAGS += -mA7 diff --git a/arch/arc/cpu/arcv1/start.S b/arch/arc/cpu/arcv1/start.S new file mode 100644 index 0000000000..01cfba4933 --- /dev/null +++ b/arch/arc/cpu/arcv1/start.S @@ -0,0 +1,254 @@ +/* + * Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +/* + * Note on the LD/ST addressing modes with address register write-back + * + * LD.a same as LD.aw + * + * LD.a reg1, [reg2, x] => Pre Incr + * Eff Addr for load = [reg2 + x] + * + * LD.ab reg1, [reg2, x] => Post Incr + * Eff Addr for load = [reg2] + */ + +.macro PUSH reg + st.a \reg, [%sp, -4] +.endm + +.macro PUSHAX aux + lr %r9, [\aux] + PUSH %r9 +.endm + +.macro SAVE_R1_TO_R24 + PUSH %r1 + PUSH %r2 + PUSH %r3 + PUSH %r4 + PUSH %r5 + PUSH %r6 + PUSH %r7 + PUSH %r8 + PUSH %r9 + PUSH %r10 + PUSH %r11 + PUSH %r12 + PUSH %r13 + PUSH %r14 + PUSH %r15 + PUSH %r16 + PUSH %r17 + PUSH %r18 + PUSH %r19 + PUSH %r20 + PUSH %r21 + PUSH %r22 + PUSH %r23 + PUSH %r24 +.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] + 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 + PUSH %gp + PUSH %fp + PUSH %blink + PUSHAX %eret + PUSHAX %erstatus + PUSH %lp_count + PUSHAX %lp_end + PUSHAX %lp_start + 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 +_ivt: + /* Critical system events */ + j _start /* 0 - 0x000 */ + j memory_error /* 1 - 0x008 */ + j instruction_error /* 2 - 0x010 */ + + /* Device interrupts */ +.rept 29 + j interrupt_handler /* 3:31 - 0x018:0xF8 */ +.endr + /* Exceptions */ + j EV_MachineCheck /* 0x100, Fatal Machine check (0x20) */ + j EV_TLBMissI /* 0x108, Intruction TLB miss (0x21) */ + j EV_TLBMissD /* 0x110, Data TLB miss (0x22) */ + j EV_TLBProtV /* 0x118, Protection Violation (0x23) + or Misaligned Access */ + j EV_PrivilegeV /* 0x120, Privilege Violation (0x24) */ + 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 + SAVE_EXCEPTION_SOURCE + mov %r1, %sp + j do_memory_error + +instruction_error: + SAVE_ALL_SYS + SAVE_EXCEPTION_SOURCE + mov %r1, %sp + j do_instruction_error + +interrupt_handler: + /* Todo - save and restore CPU context when interrupts will be in use */ + bl do_interrupt_handler + rtie + +EV_MachineCheck: + SAVE_ALL_SYS + SAVE_EXCEPTION_SOURCE + mov %r1, %sp + j do_machine_check_fault + +EV_TLBMissI: + SAVE_ALL_SYS + mov %r0, %sp + j do_itlb_miss + +EV_TLBMissD: + SAVE_ALL_SYS + mov %r0, %sp + j do_dtlb_miss + +EV_TLBProtV: + SAVE_ALL_SYS + SAVE_EXCEPTION_SOURCE + mov %r1, %sp + j do_tlb_prot_violation + +EV_PrivilegeV: + SAVE_ALL_SYS + mov %r0, %sp + j do_privilege_violation + +EV_Trap: + SAVE_ALL_SYS + mov %r0, %sp + j do_trap + +EV_Extension: + SAVE_ALL_SYS + mov %r0, %sp + j do_extension + +/* + * void relocate_code (addr_sp, gd, addr_moni) + * + * This "function" does not return, instead it continues in RAM + * after relocating the monitor code. + * + * r0 = start_addr_sp + * r1 = new__gd + * r2 = relocaddr + */ +.align 4 +.globl relocate_code +relocate_code: + /* + * r0-r12 might be clobbered by C functions + * so we use r13-r16 for storage here + */ + mov %r13, %r0 /* save addr_sp */ + mov %r14, %r1 /* save addr of gd */ + mov %r15, %r2 /* save addr of destination */ + + mov %r16, %r2 /* %r9 - relocation offset */ + sub %r16, %r16, __image_copy_start + +/* Set up the stack */ +stack_setup: + mov %sp, %r13 + mov %fp, %sp + +/* Check if monitor is loaded right in place for relocation */ + mov %r0, __image_copy_start + cmp %r0, %r15 /* skip relocation if code loaded */ + bz do_board_init_r /* in target location already */ + +/* Copy data (__image_copy_start - __image_copy_end) to new location */ + mov %r1, %r15 + mov %r2, __image_copy_end + sub %r2, %r2, %r0 /* r3 <- amount of bytes to copy */ + asr %r2, %r2, 2 /* r3 <- amount of words to copy */ + mov %lp_count, %r2 + lp copy_end + ld.ab %r2,[%r0,4] + st.ab %r2,[%r1,4] +copy_end: + +/* Fix relocations related issues */ + bl do_elf_reloc_fixups +#ifndef CONFIG_SYS_ICACHE_OFF + bl invalidate_icache_all +#endif +#ifndef CONFIG_SYS_DCACHE_OFF + bl flush_dcache_all +#endif + +/* Update position of intterupt vector table */ + lr %r0, [ARC_AUX_INTR_VEC_BASE] /* Read current position */ + add %r0, %r0, %r16 /* Update address */ + sr %r0, [ARC_AUX_INTR_VEC_BASE] /* Write new position */ + +do_board_init_r: +/* Prepare for exection of "board_init_r" in relocated monitor */ + mov %r2, board_init_r /* old address of "board_init_r()" */ + add %r2, %r2, %r16 /* new address of "board_init_r()" */ + mov %r0, %r14 /* 1-st parameter: gd_t */ + mov %r1, %r15 /* 2-nd parameter: dest_addr */ + j [%r2]