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Merge git://git.denx.de/u-boot-arc

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This commit is contained in:
Tom Rini 2015-04-03 09:14:44 -04:00
commit d68df02809
34 changed files with 603 additions and 584 deletions
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1
arch/Kconfig
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@ -14,6 +14,7 @@ config ARC
select HAVE_PRIVATE_LIBGCC
select HAVE_GENERIC_BOARD
select SYS_GENERIC_BOARD
select SUPPORT_OF_CONTROL
config ARM
bool "ARM architecture"

10
arch/arc/Kconfig
View File

@ -123,7 +123,7 @@ config ARC_CACHE_LINE_SHIFT
int "Cache Line Length (as power of 2)"
range 5 7
default "6"
depends on !SYS_DCACHE_OFF || !SYS_DCACHE_OFF
depends on !SYS_DCACHE_OFF || !SYS_ICACHE_OFF
help
Starting with ARC700 4.9, Cache line length is configurable,
This option specifies "N", with Line-len = 2 power N
@ -133,6 +133,14 @@ config ARC_CACHE_LINE_SHIFT
choice
prompt "Target select"
config TARGET_DUMMY
bool "Dummy target"
help
Please select one of real target boards below!
This target is only meant to force "makedefconfig" to put
TARGET_xxx in defconfig even this is the first target from the list
below.
config TARGET_TB100
bool "Support tb100"

2
arch/arc/cpu/arcv1/Makefile
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@ -4,4 +4,4 @@
# SPDX-License-Identifier: GPL-2.0+
#
obj-y += start.o
obj-y += ivt.o

27
arch/arc/cpu/arcv1/ivt.S Normal file
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@ -0,0 +1,27 @@
/*
* Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0+
*/
.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) */

254
arch/arc/cpu/arcv1/start.S
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@ -1,254 +0,0 @@
/*
* Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <asm-offsets.h>
#include <config.h>
#include <asm/arcregs.h>
/*
* 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]

2
arch/arc/cpu/arcv2/Makefile
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@ -4,4 +4,4 @@
# SPDX-License-Identifier: GPL-2.0+
#
obj-y += start.o
obj-y += ivt.o

27
arch/arc/cpu/arcv2/ivt.S Normal file
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@ -0,0 +1,27 @@
/*
* Copyright (C) 2013-2015 Synopsys, Inc. All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0+
*/
.section .ivt, "a",@progbits
.align 4
/* Critical system events */
.word _start /* 0 - 0x000 */
.word memory_error /* 1 - 0x008 */
.word instruction_error /* 2 - 0x010 */
/* Exceptions */
.word EV_MachineCheck /* 0x100, Fatal Machine check (0x20) */
.word EV_TLBMissI /* 0x108, Intruction TLB miss (0x21) */
.word EV_TLBMissD /* 0x110, Data TLB miss (0x22) */
.word EV_TLBProtV /* 0x118, Protection Violation (0x23)
or Misaligned Access */
.word EV_PrivilegeV /* 0x120, Privilege Violation (0x24) */
.word EV_Trap /* 0x128, Trap exception (0x25) */
.word EV_Extension /* 0x130, Extn Intruction Excp (0x26) */
/* Device interrupts */
.rept 29
j interrupt_handler /* 3:31 - 0x018:0xF8 */
.endr

254
arch/arc/cpu/arcv2/start.S
View File

@ -1,254 +0,0 @@
/*
* Copyright (C) 2013-2015 Synopsys, Inc. All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <asm-offsets.h>
#include <config.h>
#include <asm/arcregs.h>
/*
* 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 weread %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, "a",@progbits
.align 4
/* Critical system events */
.word _start /* 0 - 0x000 */
.word memory_error /* 1 - 0x008 */
.word instruction_error /* 2 - 0x010 */
/* Exceptions */
.word EV_MachineCheck /* 0x100, Fatal Machine check (0x20) */
.word EV_TLBMissI /* 0x108, Intruction TLB miss (0x21) */
.word EV_TLBMissD /* 0x110, Data TLB miss (0x22) */
.word EV_TLBProtV /* 0x118, Protection Violation (0x23)
or Misaligned Access */
.word EV_PrivilegeV /* 0x120, Privilege Violation (0x24) */
.word EV_Trap /* 0x128, Trap exception (0x25) */
.word EV_Extension /* 0x130, Extn Intruction Excp (0x26) */
/* Device interrupts */
.rept 29
j interrupt_handler /* 3:31 - 0x018:0xF8 */
.endr
.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]

12
arch/arc/dts/Makefile Normal file
View File

@ -0,0 +1,12 @@
dtb-$(CONFIG_TARGET_ARCANGEL4) += arcangel4.dtb
dtb-$(CONFIG_TARGET_TB100) += abilis_tb100.dtb
targets += $(dtb-y)
DTC_FLAGS += -R 4 -p 0x1000
PHONY += dtbs
dtbs: $(addprefix $(obj)/, $(dtb-y))
@:
clean-files := *.dtb

24
arch/arc/dts/abilis_tb100.dts Normal file
View File

@ -0,0 +1,24 @@
/*
* Copyright (C) 2015 Synopsys, Inc. (www.synopsys.com)
*
* SPDX-License-Identifier: GPL-2.0+
*/
/dts-v1/;
#include "skeleton.dtsi"
/ {
#address-cells = <1>;
#size-cells = <1>;
aliases {
console = &uart0;
};
uart0: serial@ff100000 {
compatible = "snps,dw-apb-uart";
reg = <0xff100000 0x1000>;
reg-shift = <2>;
reg-io-width = <4>;
};
};

24
arch/arc/dts/arcangel4.dts Normal file
View File

@ -0,0 +1,24 @@
/*
* Copyright (C) 2015 Synopsys, Inc. (www.synopsys.com)
*
* SPDX-License-Identifier: GPL-2.0+
*/
/dts-v1/;
#include "skeleton.dtsi"
/ {
#address-cells = <1>;
#size-cells = <1>;
aliases {
console = &arcuart0;
};
arcuart0: serial@0xc0fc1000 {
compatible = "snps,arc-uart";
reg = <0xc0fc1000 0x100>;
clock-frequency = <80000000>;
};
};

13
arch/arc/dts/skeleton.dtsi Normal file
View File

@ -0,0 +1,13 @@
/*
* Skeleton device tree; the bare minimum needed to boot; just include and
* add a compatible value. The bootloader will typically populate the memory
* node.
*/
/ {
#address-cells = <1>;
#size-cells = <1>;
chosen { };
aliases { };
memory { device_type = "memory"; reg = <0 0>; };
};

4
arch/arc/include/asm/arcregs.h
View File

@ -46,6 +46,10 @@
#define ARC_AUX_DC_PTAG 0x5C
#endif
#define ARC_BCR_DC_BUILD 0x72
#define ARC_BCR_SLC 0xce
#define ARC_AUX_SLC_CONTROL 0x903
#define ARC_AUX_SLC_FLUSH 0x904
#define ARC_AUX_SLC_INVALIDATE 0x905
#ifndef __ASSEMBLY__
/* Accessors for auxiliary registers */

11
arch/arc/include/asm/cache.h
View File

@ -27,4 +27,15 @@
#define CONFIG_ARC_MMU_VER 4
#endif
#ifndef __ASSEMBLY__
#ifdef CONFIG_ISA_ARCV2
void slc_enable(void);
void slc_disable(void);
void slc_flush(void);
void slc_invalidate(void);
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ASM_ARC_CACHE_H */

1
arch/arc/include/asm/config.h
View File

@ -7,7 +7,6 @@
#ifndef __ASM_ARC_CONFIG_H_
#define __ASM_ARC_CONFIG_H_
#define CONFIG_SYS_GENERIC_GLOBAL_DATA
#define CONFIG_SYS_BOOT_RAMDISK_HIGH
#define CONFIG_ARCH_EARLY_INIT_R

12
arch/arc/include/asm/init_helpers.h Normal file
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@ -0,0 +1,12 @@
/*
* Copyright (C) 2013-2015 Synopsys, Inc. All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _ASM_ARC_INIT_HELPERS_H
#define _ASM_ARC_INIT_HELPERS_H
int init_cache_f_r(void);
#endif /* _ASM_ARC_INIT_HELPERS_H */

16
arch/arc/include/asm/relocate.h Normal file
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@ -0,0 +1,16 @@
/*
* Copyright (C) 2013-2015 Synopsys, Inc. All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _ASM_ARC_RELOCATE_H
#define _ASM_ARC_RELOCATE_H
#include <common.h>
int copy_uboot_to_ram(void);
int clear_bss(void);
int do_elf_reloc_fixups(void);
#endif /* _ASM_ARC_RELOCATE_H */

3
arch/arc/include/asm/u-boot-arc.h
View File

@ -9,4 +9,7 @@
int arch_early_init_r(void);
void board_init_f_r_trampoline(ulong) __attribute__ ((noreturn));
void board_init_f_r(void) __attribute__ ((noreturn));
#endif /* __ASM_ARC_U_BOOT_ARC_H__ */

3
arch/arc/lib/Makefile
View File

@ -18,6 +18,9 @@ obj-y += memcpy-700.o
obj-y += memset.o
obj-y += reset.o
obj-y += timer.o
obj-y += start.o
obj-y += ints_low.o
obj-y += init_helpers.o
obj-$(CONFIG_CMD_BOOTM) += bootm.o

58
arch/arc/lib/cache.c
View File

@ -16,6 +16,7 @@
#define DC_CTRL_INV_MODE_FLUSH (1 << 6)
#define DC_CTRL_FLUSH_STATUS (1 << 8)
#define CACHE_VER_NUM_MASK 0xF
#define SLC_CTRL_SB (1 << 2)
int icache_status(void)
{
@ -49,10 +50,12 @@ void icache_disable(void)
void invalidate_icache_all(void)
{
#ifndef CONFIG_SYS_ICACHE_OFF
/* If no cache in CPU exit immediately */
if (!(read_aux_reg(ARC_BCR_IC_BUILD) & CACHE_VER_NUM_MASK))
return;
/* Any write to IC_IVIC register triggers invalidation of entire I$ */
write_aux_reg(ARC_AUX_IC_IVIC, 1);
#endif /* CONFIG_SYS_ICACHE_OFF */
}
int dcache_status(void)
@ -156,13 +159,60 @@ void invalidate_dcache_range(unsigned long start, unsigned long end)
void invalidate_dcache_all(void)
{
#ifndef CONFIG_SYS_DCACHE_OFF
/* If no cache in CPU exit immediately */
if (!(read_aux_reg(ARC_BCR_DC_BUILD) & CACHE_VER_NUM_MASK))
return;
/* Write 1 to DC_IVDC register triggers invalidation of entire D$ */
write_aux_reg(ARC_AUX_DC_IVDC, 1);
#endif /* CONFIG_SYS_DCACHE_OFF */
}
void flush_cache(unsigned long start, unsigned long size)
{
flush_dcache_range(start, start + size);
}
#ifdef CONFIG_ISA_ARCV2
void slc_enable(void)
{
/* If SLC ver = 0, no SLC present in CPU */
if (!(read_aux_reg(ARC_BCR_SLC) & 0xff))
return;
write_aux_reg(ARC_AUX_SLC_CONTROL,
read_aux_reg(ARC_AUX_SLC_CONTROL) & ~1);
}
void slc_disable(void)
{
/* If SLC ver = 0, no SLC present in CPU */
if (!(read_aux_reg(ARC_BCR_SLC) & 0xff))
return;
write_aux_reg(ARC_AUX_SLC_CONTROL,
read_aux_reg(ARC_AUX_SLC_CONTROL) | 1);
}
void slc_flush(void)
{
/* If SLC ver = 0, no SLC present in CPU */
if (!(read_aux_reg(ARC_BCR_SLC) & 0xff))
return;
write_aux_reg(ARC_AUX_SLC_FLUSH, 1);
/* Wait flush end */
while (read_aux_reg(ARC_AUX_SLC_CONTROL) & SLC_CTRL_SB)
;
}
void slc_invalidate(void)
{
/* If SLC ver = 0, no SLC present in CPU */
if (!(read_aux_reg(ARC_BCR_SLC) & 0xff))
return;
write_aux_reg(ARC_AUX_SLC_INVALIDATE, 1);
}
#endif /* CONFIG_ISA_ARCV2 */

13
arch/arc/lib/cpu.c
View File

@ -12,19 +12,6 @@ DECLARE_GLOBAL_DATA_PTR;
int arch_cpu_init(void)
{
#ifdef CONFIG_SYS_ICACHE_OFF
icache_disable();
#else
icache_enable();
invalidate_icache_all();
#endif
flush_dcache_all();
#ifdef CONFIG_SYS_DCACHE_OFF
dcache_disable();
#else
dcache_enable();
#endif
timer_init();
/* In simulation (ISS) "CHIPID" and "ARCNUM" are all "ff" */

25
arch/arc/lib/init_helpers.c Normal file
View File

@ -0,0 +1,25 @@
/*
* Copyright (C) 2013-2015 Synopsys, Inc. All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
DECLARE_GLOBAL_DATA_PTR;
int init_cache_f_r(void)
{
#ifndef CONFIG_SYS_ICACHE_OFF
icache_enable();
/* Make sure no stale entries persist from before we disabled cache */
invalidate_icache_all();
#endif
#ifndef CONFIG_SYS_DCACHE_OFF
dcache_enable();
/* Make sure no stale entries persist from before we disabled cache */
invalidate_dcache_all();
#endif
return 0;
}

151
arch/arc/lib/ints_low.S Normal file
View File

@ -0,0 +1,151 @@
/*
* Copyright (C) 2013-2015 Synopsys, Inc. All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <linux/linkage.h>
/*
* 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
ENTRY(memory_error)
SAVE_ALL_SYS
SAVE_EXCEPTION_SOURCE
mov %r1, %sp
j do_memory_error
ENDPROC(memory_error)
ENTRY(instruction_error)
SAVE_ALL_SYS
SAVE_EXCEPTION_SOURCE
mov %r1, %sp
j do_instruction_error
ENDPROC(instruction_error)
ENTRY(interrupt_handler)
/* Todo - save and restore CPU context when interrupts will be in use */
bl do_interrupt_handler
rtie
ENDPROC(interrupt_handler)
ENTRY(EV_MachineCheck)
SAVE_ALL_SYS
SAVE_EXCEPTION_SOURCE
mov %r1, %sp
j do_machine_check_fault
ENDPROC(EV_MachineCheck)
ENTRY(EV_TLBMissI)
SAVE_ALL_SYS
mov %r0, %sp
j do_itlb_miss
ENDPROC(EV_TLBMissI)
ENTRY(EV_TLBMissD)
SAVE_ALL_SYS
mov %r0, %sp
j do_dtlb_miss
ENDPROC(EV_TLBMissD)
ENTRY(EV_TLBProtV)
SAVE_ALL_SYS
SAVE_EXCEPTION_SOURCE
mov %r1, %sp
j do_tlb_prot_violation
ENDPROC(EV_TLBProtV)
ENTRY(EV_PrivilegeV)
SAVE_ALL_SYS
mov %r0, %sp
j do_privilege_violation
ENDPROC(EV_PrivilegeV)
ENTRY(EV_Trap)
SAVE_ALL_SYS
mov %r0, %sp
j do_trap
ENDPROC(EV_Trap)
ENTRY(EV_Extension)
SAVE_ALL_SYS
mov %r0, %sp
j do_extension
ENDPROC(EV_Extension)

19
arch/arc/lib/relocate.c
View File

@ -10,6 +10,25 @@
DECLARE_GLOBAL_DATA_PTR;
int copy_uboot_to_ram(void)
{
size_t len = (size_t)&__image_copy_end - (size_t)&__image_copy_start;
memcpy((void *)gd->relocaddr, (void *)&__image_copy_start, len);
return 0;
}
int clear_bss(void)
{
ulong dst_addr = (ulong)&__bss_start + gd->reloc_off;
size_t len = (size_t)&__bss_end - (size_t)&__bss_start;
memset((void *)dst_addr, 0x00, len);
return 0;
}
/*
* Base functionality is taken from x86 version with added ARC-specifics
*/

63
arch/arc/lib/start.S Normal file
View File

@ -0,0 +1,63 @@
/*
* Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <asm-offsets.h>
#include <config.h>
#include <linux/linkage.h>
#include <asm/arcregs.h>
ENTRY(_start)
/* Setup interrupt vector base that matches "__text_start" */
sr __ivt_start, [ARC_AUX_INTR_VEC_BASE]
/* Setup stack- and frame-pointers */
mov %sp, CONFIG_SYS_INIT_SP_ADDR
mov %fp, %sp
/* Unconditionally disable caches */
#ifdef CONFIG_ISA_ARCV2
bl slc_flush
bl slc_disable
#endif
bl flush_dcache_all
bl dcache_disable
bl icache_disable
/* Allocate and zero GD, update SP */
mov %r0, %sp
bl board_init_f_mem
/* Update stack- and frame-pointers */
mov %sp, %r0
mov %fp, %sp
/* Zero the one and only argument of "board_init_f" */
mov_s %r0, 0
j board_init_f
ENDPROC(_start)
/*
* void board_init_f_r_trampoline(stack-pointer address)
*
* This "function" does not return, instead it continues in RAM
* after relocating the monitor code.
*
* r0 = new stack-pointer
*/
ENTRY(board_init_f_r_trampoline)
/* Set up the stack- and frame-pointers */
mov %sp, %r0
mov %fp, %sp
/* Update position of intterupt vector table */
lr %r0, [ARC_AUX_INTR_VEC_BASE]
ld %r1, [%r25, GD_RELOC_OFF]
add %r0, %r0, %r1
sr %r0, [ARC_AUX_INTR_VEC_BASE]
/* Re-enter U-Boot by calling board_init_f_r */
j board_init_f_r
ENDPROC(board_init_f_r_trampoline)

4
board/synopsys/axs101/axs101.c
View File

@ -27,9 +27,9 @@ int board_mmc_init(bd_t *bis)
host->ioaddr = (void *)ARC_DWMMC_BASE;
host->buswidth = 4;
host->dev_index = 0;
host->bus_hz = 25000000;
host->bus_hz = 50000000;
add_dwmci(host, 52000000, 400000);
add_dwmci(host, host->bus_hz, 400000);
return 0;
}

8
common/board_f.c
View File

@ -47,7 +47,7 @@
#include <asm/errno.h>
#include <asm/io.h>
#include <asm/sections.h>
#ifdef CONFIG_X86
#if defined(CONFIG_X86) || defined(CONFIG_ARC)
#include <asm/init_helpers.h>
#include <asm/relocate.h>
#endif
@ -761,7 +761,7 @@ static int jump_to_copy(void)
* similarly for all archs. When we do generic relocation, hopefully
* we can make all archs enable the dcache prior to relocation.
*/
#ifdef CONFIG_X86
#if defined(CONFIG_X86) || defined(CONFIG_ARC)
/*
* SDRAM and console are now initialised. The final stack can now
* be setup in SDRAM. Code execution will continue in Flash, but
@ -997,7 +997,7 @@ static init_fnc_t init_sequence_f[] = {
INIT_FUNC_WATCHDOG_RESET
reloc_fdt,
setup_reloc,
#ifdef CONFIG_X86
#if defined(CONFIG_X86) || defined(CONFIG_ARC)
copy_uboot_to_ram,
clear_bss,
do_elf_reloc_fixups,
@ -1041,7 +1041,7 @@ void board_init_f(ulong boot_flags)
#endif
}
#ifdef CONFIG_X86
#if defined(CONFIG_X86) || defined(CONFIG_ARC)
/*
* For now this code is only used on x86.
*

9
configs/arcangel4-be_defconfig
View File

@ -1,5 +1,10 @@
CONFIG_ARC=y
CONFIG_TARGET_ARCANGEL4=y
CONFIG_SYS_CLK_FREQ=70000000
CONFIG_CPU_BIG_ENDIAN=y
CONFIG_TARGET_ARCANGEL4=y
CONFIG_DM=y
CONFIG_DM_SERIAL=y
CONFIG_DEFAULT_DEVICE_TREE="arcangel4"
CONFIG_SYS_TEXT_BASE=0x81000000
CONFIG_SYS_CLK_FREQ=70000000
CONFIG_OF_CONTROL=y
CONFIG_OF_EMBED=y

7
configs/arcangel4_defconfig
View File

@ -1,4 +1,9 @@
CONFIG_ARC=y
CONFIG_TARGET_ARCANGEL4=y
CONFIG_SYS_CLK_FREQ=70000000
CONFIG_DM=y
CONFIG_DM_SERIAL=y
CONFIG_DEFAULT_DEVICE_TREE="arcangel4"
CONFIG_SYS_TEXT_BASE=0x81000000
CONFIG_SYS_CLK_FREQ=70000000
CONFIG_OF_CONTROL=y
CONFIG_OF_EMBED=y

8
configs/axs101_defconfig
View File

@ -1,6 +1,6 @@
CONFIG_ARC=y
CONFIG_TARGET_AXS101=y
CONFIG_SYS_CLK_FREQ=750000000
CONFIG_ARC_CACHE_LINE_SHIFT=5
CONFIG_SYS_DCACHE_OFF=y
CONFIG_SYS_TEXT_BASE=0x81000000
CONFIG_ARC_CACHE_LINE_SHIFT=5
CONFIG_TARGET_AXS101=y
CONFIG_SYS_TEXT_BASE=0x81000000
CONFIG_SYS_CLK_FREQ=750000000

4
configs/axs103_defconfig
View File

@ -1,5 +1,5 @@
CONFIG_SYS_TEXT_BASE=0x81000000
CONFIG_SYS_CLK_FREQ=50000000
CONFIG_ARC=y
CONFIG_ISA_ARCV2=y
CONFIG_TARGET_AXS101=y
CONFIG_SYS_TEXT_BASE=0x81000000
CONFIG_SYS_CLK_FREQ=50000000

9
configs/tb100_defconfig
View File

@ -1,5 +1,10 @@
CONFIG_ARC=y
CONFIG_TARGET_TB100=y
CONFIG_SYS_CLK_FREQ=500000000
CONFIG_ARC_CACHE_LINE_SHIFT=5
CONFIG_TARGET_TB100=y
CONFIG_DM=y
CONFIG_DM_SERIAL=y
CONFIG_DEFAULT_DEVICE_TREE="abilis_tb100"
CONFIG_SYS_TEXT_BASE=0x84000000
CONFIG_SYS_CLK_FREQ=500000000
CONFIG_OF_CONTROL=y
CONFIG_OF_EMBED=y

103
drivers/serial/serial_arc.c
View File

@ -8,6 +8,7 @@
*/
#include <common.h>
#include <dm.h>
#include <serial.h>
DECLARE_GLOBAL_DATA_PTR;
@ -23,21 +24,23 @@ struct arc_serial_regs {
unsigned int baudh;
};
struct arc_serial_platdata {
struct arc_serial_regs *reg;
unsigned int uartclk;
};
/* Bit definitions of STATUS register */
#define UART_RXEMPTY (1 << 5)
#define UART_OVERFLOW_ERR (1 << 1)
#define UART_TXEMPTY (1 << 7)
struct arc_serial_regs *regs;
static void arc_serial_setbrg(void)
static int arc_serial_setbrg(struct udevice *dev, int baudrate)
{
int arc_console_baud;
struct arc_serial_platdata *plat = dev->platdata;
struct arc_serial_regs *const regs = plat->reg;
int arc_console_baud = gd->cpu_clk / (baudrate * 4) - 1;
if (!gd->baudrate)
gd->baudrate = CONFIG_BAUDRATE;
arc_console_baud = gd->cpu_clk / (gd->baudrate * 4) - 1;
writeb(arc_console_baud & 0xff, &regs->baudl);
#ifdef CONFIG_ARC
@ -56,34 +59,49 @@ static void arc_serial_setbrg(void)
#else
writeb((arc_console_baud & 0xff00) >> 8, &regs->baudh);
#endif
}
static int arc_serial_init(void)
{
regs = (struct arc_serial_regs *)CONFIG_ARC_UART_BASE;
serial_setbrg();
return 0;
}
static void arc_serial_putc(const char c)
static int arc_serial_putc(struct udevice *dev, const char c)
{
struct arc_serial_platdata *plat = dev->platdata;
struct arc_serial_regs *const regs = plat->reg;
if (c == '\n')
arc_serial_putc('\r');
arc_serial_putc(dev, '\r');
while (!(readb(&regs->status) & UART_TXEMPTY))
;
writeb(c, &regs->data);
return 0;
}
static int arc_serial_tstc(void)
static int arc_serial_tstc(struct arc_serial_regs *const regs)
{
return !(readb(&regs->status) & UART_RXEMPTY);
}
static int arc_serial_getc(void)
static int arc_serial_pending(struct udevice *dev, bool input)
{
while (!arc_serial_tstc())
struct arc_serial_platdata *plat = dev->platdata;
struct arc_serial_regs *const regs = plat->reg;
uint32_t status = readb(&regs->status);
if (input)
return status & UART_RXEMPTY ? 0 : 1;
else
return status & UART_TXEMPTY ? 0 : 1;
}
static int arc_serial_getc(struct udevice *dev)
{
struct arc_serial_platdata *plat = dev->platdata;
struct arc_serial_regs *const regs = plat->reg;
while (!arc_serial_tstc(regs))
;
/* Check for overflow errors */
@ -93,23 +111,42 @@ static int arc_serial_getc(void)
return readb(&regs->data) & 0xFF;
}
static struct serial_device arc_serial_drv = {
.name = "arc_serial",
.start = arc_serial_init,
.stop = NULL,
.setbrg = arc_serial_setbrg,
.putc = arc_serial_putc,
.puts = default_serial_puts,
.getc = arc_serial_getc,
.tstc = arc_serial_tstc,
static int arc_serial_probe(struct udevice *dev)
{
return 0;
}
static const struct dm_serial_ops arc_serial_ops = {
.putc = arc_serial_putc,
.pending = arc_serial_pending,
.getc = arc_serial_getc,
.setbrg = arc_serial_setbrg,
};
void arc_serial_initialize(void)
static const struct udevice_id arc_serial_ids[] = {
{ .compatible = "snps,arc-uart" },
{ }
};
static int arc_serial_ofdata_to_platdata(struct udevice *dev)
{
serial_register(&arc_serial_drv);
struct arc_serial_platdata *plat = dev_get_platdata(dev);
DECLARE_GLOBAL_DATA_PTR;
plat->reg = (struct arc_serial_regs *)fdtdec_get_addr(gd->fdt_blob,
dev->of_offset, "reg");
plat->uartclk = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
"clock-frequency", 0);
return 0;
}
__weak struct serial_device *default_serial_console(void)
{
return &arc_serial_drv;
}
U_BOOT_DRIVER(serial_arc) = {
.name = "serial_arc",
.id = UCLASS_SERIAL,
.of_match = arc_serial_ids,
.ofdata_to_platdata = arc_serial_ofdata_to_platdata,
.probe = arc_serial_probe,
.ops = &arc_serial_ops,
.flags = DM_FLAG_PRE_RELOC,
};

6
include/configs/tb100.h
View File

@ -35,14 +35,10 @@
/*
* UART configuration
*/
#define CONFIG_CONS_INDEX 1
#define CONFIG_DW_SERIAL
#define CONFIG_SYS_NS16550
#define CONFIG_SYS_NS16550_SERIAL
#define CONFIG_SYS_NS16550_REG_SIZE -4
#define CONFIG_SYS_NS16550_CLK 166666666
#define CONFIG_SYS_NS16550_COM1 0xFF100000
#define CONFIG_SYS_NS16550_MEM32
#define CONFIG_BAUDRATE 115200
/*