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Blackfin arch: unify the duplicated portions of __start and split mach-specific pieces into _mach_early_start where they will be easier to trim over time 

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
This commit is contained in:
Mike Frysinger 2008-08-06 17:23:50 +08:00 committed by Bryan Wu
parent 67618fd874
commit 17e89bcfa1
6 changed files with 146 additions and 649 deletions
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132
arch/blackfin/mach-bf527/head.S
View File

@ -30,93 +30,16 @@
#include <linux/linkage.h> #include <linux/linkage.h>
#include <linux/init.h> #include <linux/init.h>
#include <asm/blackfin.h> #include <asm/blackfin.h>
#include <asm/trace.h>
#ifdef CONFIG_BFIN_KERNEL_CLOCK #ifdef CONFIG_BFIN_KERNEL_CLOCK
#include <asm/mach-common/clocks.h> #include <asm/mach-common/clocks.h>
#include <asm/mach/mem_init.h> #include <asm/mach/mem_init.h>
#endif #endif
.extern ___bss_stop
.extern ___bss_start
.extern _bf53x_relocate_l1_mem .extern _bf53x_relocate_l1_mem
#define INITIAL_STACK 0xFFB01000
__INIT __INIT
ENTRY(__start) ENTRY(_mach_early_start)
/* R0: argument of command line string, passed from uboot, save it */
R7 = R0;
/* Enable Cycle Counter and Nesting Of Interrupts */
#ifdef CONFIG_BFIN_SCRATCH_REG_CYCLES
R0 = SYSCFG_SNEN;
#else
R0 = SYSCFG_SNEN | SYSCFG_CCEN;
#endif
SYSCFG = R0;
R0 = 0;
/* Clear Out All the data and pointer Registers */
R1 = R0;
R2 = R0;
R3 = R0;
R4 = R0;
R5 = R0;
R6 = R0;
P0 = R0;
P1 = R0;
P2 = R0;
P3 = R0;
P4 = R0;
P5 = R0;
LC0 = r0;
LC1 = r0;
L0 = r0;
L1 = r0;
L2 = r0;
L3 = r0;
/* Clear Out All the DAG Registers */
B0 = r0;
B1 = r0;
B2 = r0;
B3 = r0;
I0 = r0;
I1 = r0;
I2 = r0;
I3 = r0;
M0 = r0;
M1 = r0;
M2 = r0;
M3 = r0;
trace_buffer_init(p0,r0);
P0 = R1;
R0 = R1;
/* Turn off the icache */
p0.l = LO(IMEM_CONTROL);
p0.h = HI(IMEM_CONTROL);
R1 = [p0];
R0 = ~ENICPLB;
R0 = R0 & R1;
[p0] = R0;
SSYNC;
/* Turn off the dcache */
p0.l = LO(DMEM_CONTROL);
p0.h = HI(DMEM_CONTROL);
R1 = [p0];
R0 = ~ENDCPLB;
R0 = R0 & R1;
[p0] = R0;
SSYNC;
#if defined(CONFIG_BF527) #if defined(CONFIG_BF527)
p0.h = hi(EMAC_SYSTAT); p0.h = hi(EMAC_SYSTAT);
p0.l = lo(EMAC_SYSTAT); p0.l = lo(EMAC_SYSTAT);
@ -152,57 +75,8 @@ ENTRY(__start)
w[p0] = r0.L; /* To enable UART clock */ w[p0] = r0.L; /* To enable UART clock */
ssync; ssync;
/* Initialize stack pointer */ rts;
sp.l = lo(INITIAL_STACK); ENDPROC(_mach_early_start)
sp.h = hi(INITIAL_STACK);
fp = sp;
usp = sp;
#ifdef CONFIG_EARLY_PRINTK
SP += -12;
call _init_early_exception_vectors;
SP += 12;
#endif
/* Put The Code for PLL Programming and SDRAM Programming in L1 ISRAM */
call _bf53x_relocate_l1_mem;
#ifdef CONFIG_BFIN_KERNEL_CLOCK
call _start_dma_code;
#endif
/* This section keeps the processor in supervisor mode
* during kernel boot. Switches to user mode at end of boot.
* See page 3-9 of Hardware Reference manual for documentation.
*/
/* EVT15 = _real_start */
p0.l = lo(EVT15);
p0.h = hi(EVT15);
p1.l = _real_start;
p1.h = _real_start;
[p0] = p1;
csync;
p0.l = lo(IMASK);
p0.h = hi(IMASK);
p1.l = IMASK_IVG15;
p1.h = 0x0;
[p0] = p1;
csync;
raise 15;
p0.l = .LWAIT_HERE;
p0.h = .LWAIT_HERE;
reti = p0;
#if ANOMALY_05000281
nop; nop; nop;
#endif
rti;
.LWAIT_HERE:
jump .LWAIT_HERE;
ENDPROC(__start)
__FINIT __FINIT

131
arch/blackfin/mach-bf533/head.S
View File

@ -30,74 +30,16 @@
#include <linux/linkage.h> #include <linux/linkage.h>
#include <linux/init.h> #include <linux/init.h>
#include <asm/blackfin.h> #include <asm/blackfin.h>
#include <asm/trace.h>
#ifdef CONFIG_BFIN_KERNEL_CLOCK #ifdef CONFIG_BFIN_KERNEL_CLOCK
#include <asm/mach-common/clocks.h> #include <asm/mach-common/clocks.h>
#include <asm/mach/mem_init.h> #include <asm/mach/mem_init.h>
#endif #endif
.extern ___bss_stop
.extern ___bss_start
.extern _bf53x_relocate_l1_mem .extern _bf53x_relocate_l1_mem
#define INITIAL_STACK 0xFFB01000
__INIT __INIT
ENTRY(__start) ENTRY(_mach_early_start)
/* R0: argument of command line string, passed from uboot, save it */
R7 = R0;
/* Enable Cycle Counter and Nesting Of Interrupts */
#ifdef CONFIG_BFIN_SCRATCH_REG_CYCLES
R0 = SYSCFG_SNEN;
#else
R0 = SYSCFG_SNEN | SYSCFG_CCEN;
#endif
SYSCFG = R0;
R0 = 0;
/* Clear Out All the data and pointer Registers */
R1 = R0;
R2 = R0;
R3 = R0;
R4 = R0;
R5 = R0;
R6 = R0;
P0 = R0;
P1 = R0;
P2 = R0;
P3 = R0;
P4 = R0;
P5 = R0;
LC0 = r0;
LC1 = r0;
L0 = r0;
L1 = r0;
L2 = r0;
L3 = r0;
/* Clear Out All the DAG Registers */
B0 = r0;
B1 = r0;
B2 = r0;
B3 = r0;
I0 = r0;
I1 = r0;
I2 = r0;
I3 = r0;
M0 = r0;
M1 = r0;
M2 = r0;
M3 = r0;
trace_buffer_init(p0,r0);
P0 = R1;
R0 = R1;
p0.h = hi(FIO_MASKA_C); p0.h = hi(FIO_MASKA_C);
p0.l = lo(FIO_MASKA_C); p0.l = lo(FIO_MASKA_C);
r0 = 0xFFFF(Z); r0 = 0xFFFF(Z);
@ -110,24 +52,6 @@ ENTRY(__start)
w[p0] = r0.L; /* Disable all interrupts */ w[p0] = r0.L; /* Disable all interrupts */
ssync; ssync;
/* Turn off the icache */
p0.l = LO(IMEM_CONTROL);
p0.h = HI(IMEM_CONTROL);
R1 = [p0];
R0 = ~ENICPLB;
R0 = R0 & R1;
[p0] = R0;
SSYNC;
/* Turn off the dcache */
p0.l = LO(DMEM_CONTROL);
p0.h = HI(DMEM_CONTROL);
R1 = [p0];
R0 = ~ENDCPLB;
R0 = R0 & R1;
[p0] = R0;
SSYNC;
/* Initialise UART - when booting from u-boot, the UART is not disabled /* Initialise UART - when booting from u-boot, the UART is not disabled
* so if we dont initalize here, our serial console gets hosed */ * so if we dont initalize here, our serial console gets hosed */
p0.h = hi(BFIN_UART_LCR); p0.h = hi(BFIN_UART_LCR);
@ -154,57 +78,8 @@ ENTRY(__start)
w[p0] = r0.L; /* To enable UART clock */ w[p0] = r0.L; /* To enable UART clock */
ssync; ssync;
/* Initialize stack pointer */ rts;
sp.l = lo(INITIAL_STACK); ENDPROC(_mach_early_start)
sp.h = hi(INITIAL_STACK);
fp = sp;
usp = sp;
#ifdef CONFIG_EARLY_PRINTK
SP += -12;
call _init_early_exception_vectors;
SP += 12;
#endif
/* Put The Code for PLL Programming and SDRAM Programming in L1 ISRAM */
call _bf53x_relocate_l1_mem;
#ifdef CONFIG_BFIN_KERNEL_CLOCK
call _start_dma_code;
#endif
/* This section keeps the processor in supervisor mode
* during kernel boot. Switches to user mode at end of boot.
* See page 3-9 of Hardware Reference manual for documentation.
*/
/* EVT15 = _real_start */
p0.l = lo(EVT15);
p0.h = hi(EVT15);
p1.l = _real_start;
p1.h = _real_start;
[p0] = p1;
csync;
p0.l = lo(IMASK);
p0.h = hi(IMASK);
p1.l = IMASK_IVG15;
p1.h = 0x0;
[p0] = p1;
csync;
raise 15;
p0.l = .LWAIT_HERE;
p0.h = .LWAIT_HERE;
reti = p0;
#if ANOMALY_05000281
nop; nop; nop;
#endif
rti;
.LWAIT_HERE:
jump .LWAIT_HERE;
ENDPROC(__start)
__FINIT __FINIT

132
arch/blackfin/mach-bf537/head.S
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@ -30,93 +30,16 @@
#include <linux/linkage.h> #include <linux/linkage.h>
#include <linux/init.h> #include <linux/init.h>
#include <asm/blackfin.h> #include <asm/blackfin.h>
#include <asm/trace.h>
#ifdef CONFIG_BFIN_KERNEL_CLOCK #ifdef CONFIG_BFIN_KERNEL_CLOCK
#include <asm/mach-common/clocks.h> #include <asm/mach-common/clocks.h>
#include <asm/mach/mem_init.h> #include <asm/mach/mem_init.h>
#endif #endif
.extern ___bss_stop
.extern ___bss_start
.extern _bf53x_relocate_l1_mem .extern _bf53x_relocate_l1_mem
#define INITIAL_STACK 0xFFB01000
__INIT __INIT
ENTRY(__start) ENTRY(_mach_early_start)
/* R0: argument of command line string, passed from uboot, save it */
R7 = R0;
/* Enable Cycle Counter and Nesting Of Interrupts */
#ifdef CONFIG_BFIN_SCRATCH_REG_CYCLES
R0 = SYSCFG_SNEN;
#else
R0 = SYSCFG_SNEN | SYSCFG_CCEN;
#endif
SYSCFG = R0;
R0 = 0;
/* Clear Out All the data and pointer Registers */
R1 = R0;
R2 = R0;
R3 = R0;
R4 = R0;
R5 = R0;
R6 = R0;
P0 = R0;
P1 = R0;
P2 = R0;
P3 = R0;
P4 = R0;
P5 = R0;
LC0 = r0;
LC1 = r0;
L0 = r0;
L1 = r0;
L2 = r0;
L3 = r0;
/* Clear Out All the DAG Registers */
B0 = r0;
B1 = r0;
B2 = r0;
B3 = r0;
I0 = r0;
I1 = r0;
I2 = r0;
I3 = r0;
M0 = r0;
M1 = r0;
M2 = r0;
M3 = r0;
trace_buffer_init(p0,r0);
P0 = R1;
R0 = R1;
/* Turn off the icache */
p0.l = LO(IMEM_CONTROL);
p0.h = HI(IMEM_CONTROL);
R1 = [p0];
R0 = ~ENICPLB;
R0 = R0 & R1;
[p0] = R0;
SSYNC;
/* Turn off the dcache */
p0.l = LO(DMEM_CONTROL);
p0.h = HI(DMEM_CONTROL);
R1 = [p0];
R0 = ~ENDCPLB;
R0 = R0 & R1;
[p0] = R0;
SSYNC;
/* Initialise General-Purpose I/O Modules on BF537 */ /* Initialise General-Purpose I/O Modules on BF537 */
p0.h = hi(BFIN_PORT_MUX); p0.h = hi(BFIN_PORT_MUX);
p0.l = lo(BFIN_PORT_MUX); p0.l = lo(BFIN_PORT_MUX);
@ -166,57 +89,8 @@ ENTRY(__start)
w[p0] = r0.L; /* To enable UART clock */ w[p0] = r0.L; /* To enable UART clock */
ssync; ssync;
/* Initialize stack pointer */ rts;
sp.l = lo(INITIAL_STACK); ENDPROC(_mach_early_start)
sp.h = hi(INITIAL_STACK);
fp = sp;
usp = sp;
#ifdef CONFIG_EARLY_PRINTK
SP += -12;
call _init_early_exception_vectors;
SP += 12;
#endif
/* Put The Code for PLL Programming and SDRAM Programming in L1 ISRAM */
call _bf53x_relocate_l1_mem;
#ifdef CONFIG_BFIN_KERNEL_CLOCK
call _start_dma_code;
#endif
/* This section keeps the processor in supervisor mode
* during kernel boot. Switches to user mode at end of boot.
* See page 3-9 of Hardware Reference manual for documentation.
*/
/* EVT15 = _real_start */
p0.l = lo(EVT15);
p0.h = hi(EVT15);
p1.l = _real_start;
p1.h = _real_start;
[p0] = p1;
csync;
p0.l = lo(IMASK);
p0.h = hi(IMASK);
p1.l = IMASK_IVG15;
p1.h = 0x0;
[p0] = p1;
csync;
raise 15;
p0.l = .LWAIT_HERE;
p0.h = .LWAIT_HERE;
reti = p0;
#if ANOMALY_05000281
nop; nop; nop;
#endif
rti;
.LWAIT_HERE:
jump .LWAIT_HERE;
ENDPROC(__start)
__FINIT __FINIT

133
arch/blackfin/mach-bf548/head.S
View File

@ -30,145 +30,18 @@
#include <linux/linkage.h> #include <linux/linkage.h>
#include <linux/init.h> #include <linux/init.h>
#include <asm/blackfin.h> #include <asm/blackfin.h>
#include <asm/trace.h>
#ifdef CONFIG_BFIN_KERNEL_CLOCK #ifdef CONFIG_BFIN_KERNEL_CLOCK
#include <asm/mach-common/clocks.h> #include <asm/mach-common/clocks.h>
#include <asm/mach/mem_init.h> #include <asm/mach/mem_init.h>
#endif #endif
.extern ___bss_stop
.extern ___bss_start
.extern _bf53x_relocate_l1_mem .extern _bf53x_relocate_l1_mem
#define INITIAL_STACK 0xFFB01000
__INIT __INIT
ENTRY(__start) ENTRY(_mach_early_start)
/* R0: argument of command line string, passed from uboot, save it */ rts;
R7 = R0; ENDPROC(_mach_early_start)
/* Enable Cycle Counter and Nesting Of Interrupts */
#ifdef CONFIG_BFIN_SCRATCH_REG_CYCLES
R0 = SYSCFG_SNEN;
#else
R0 = SYSCFG_SNEN | SYSCFG_CCEN;
#endif
SYSCFG = R0;
R0 = 0;
/* Clear Out All the data and pointer Registers*/
R1 = R0;
R2 = R0;
R3 = R0;
R4 = R0;
R5 = R0;
R6 = R0;
P0 = R0;
P1 = R0;
P2 = R0;
P3 = R0;
P4 = R0;
P5 = R0;
LC0 = r0;
LC1 = r0;
L0 = r0;
L1 = r0;
L2 = r0;
L3 = r0;
/* Clear Out All the DAG Registers*/
B0 = r0;
B1 = r0;
B2 = r0;
B3 = r0;
I0 = r0;
I1 = r0;
I2 = r0;
I3 = r0;
M0 = r0;
M1 = r0;
M2 = r0;
M3 = r0;
trace_buffer_init(p0,r0);
P0 = R1;
R0 = R1;
/* Turn off the icache */
p0.l = LO(IMEM_CONTROL);
p0.h = HI(IMEM_CONTROL);
R1 = [p0];
R0 = ~ENICPLB;
R0 = R0 & R1;
[p0] = R0;
SSYNC;
/* Turn off the dcache */
p0.l = LO(DMEM_CONTROL);
p0.h = HI(DMEM_CONTROL);
R1 = [p0];
R0 = ~ENDCPLB;
R0 = R0 & R1;
[p0] = R0;
SSYNC;
/* Initialize stack pointer */
SP.L = LO(INITIAL_STACK);
SP.H = HI(INITIAL_STACK);
FP = SP;
USP = SP;
#ifdef CONFIG_EARLY_PRINTK
SP += -12;
call _init_early_exception_vectors;
SP += 12;
#endif
/* Put The Code for PLL Programming and SDRAM Programming in L1 ISRAM */
call _bf53x_relocate_l1_mem;
#ifdef CONFIG_BFIN_KERNEL_CLOCK
call _start_dma_code;
#endif
/* This section keeps the processor in supervisor mode
* during kernel boot. Switches to user mode at end of boot.
* See page 3-9 of Hardware Reference manual for documentation.
*/
/* EVT15 = _real_start */
p0.l = lo(EVT15);
p0.h = hi(EVT15);
p1.l = _real_start;
p1.h = _real_start;
[p0] = p1;
csync;
p0.l = lo(IMASK);
p0.h = hi(IMASK);
p1.l = IMASK_IVG15;
p1.h = 0x0;
[p0] = p1;
csync;
raise 15;
p0.l = .LWAIT_HERE;
p0.h = .LWAIT_HERE;
reti = p0;
#if ANOMALY_05000281
nop;
nop;
nop;
#endif
rti;
.LWAIT_HERE:
jump .LWAIT_HERE;
ENDPROC(__start)
__FINIT __FINIT

136
arch/blackfin/mach-bf561/head.S
View File

@ -30,93 +30,16 @@
#include <linux/linkage.h> #include <linux/linkage.h>
#include <linux/init.h> #include <linux/init.h>
#include <asm/blackfin.h> #include <asm/blackfin.h>
#include <asm/trace.h> #ifdef CONFIG_BFIN_KERNEL_CLOCK
#if CONFIG_BFIN_KERNEL_CLOCK
#include <asm/mach-common/clocks.h> #include <asm/mach-common/clocks.h>
#include <asm/mach/mem_init.h> #include <asm/mach/mem_init.h>
#endif #endif
.extern ___bss_stop
.extern ___bss_start
.extern _bf53x_relocate_l1_mem .extern _bf53x_relocate_l1_mem
#define INITIAL_STACK 0xFFB01000
__INIT __INIT
ENTRY(__start) ENTRY(_mach_early_start)
/* R0: argument of command line string, passed from uboot, save it */
R7 = R0;
/* Enable Cycle Counter and Nesting Of Interrupts */
#ifdef CONFIG_BFIN_SCRATCH_REG_CYCLES
R0 = SYSCFG_SNEN;
#else
R0 = SYSCFG_SNEN | SYSCFG_CCEN;
#endif
SYSCFG = R0;
R0 = 0;
/* Clear Out All the data and pointer Registers */
R1 = R0;
R2 = R0;
R3 = R0;
R4 = R0;
R5 = R0;
R6 = R0;
P0 = R0;
P1 = R0;
P2 = R0;
P3 = R0;
P4 = R0;
P5 = R0;
LC0 = r0;
LC1 = r0;
L0 = r0;
L1 = r0;
L2 = r0;
L3 = r0;
/* Clear Out All the DAG Registers */
B0 = r0;
B1 = r0;
B2 = r0;
B3 = r0;
I0 = r0;
I1 = r0;
I2 = r0;
I3 = r0;
M0 = r0;
M1 = r0;
M2 = r0;
M3 = r0;
trace_buffer_init(p0,r0);
P0 = R1;
R0 = R1;
/* Turn off the icache */
p0.l = LO(IMEM_CONTROL);
p0.h = HI(IMEM_CONTROL);
R1 = [p0];
R0 = ~ENICPLB;
R0 = R0 & R1;
[p0] = R0;
SSYNC;
/* Turn off the dcache */
p0.l = LO(DMEM_CONTROL);
p0.h = HI(DMEM_CONTROL);
R1 = [p0];
R0 = ~ENDCPLB;
R0 = R0 & R1;
[p0] = R0;
SSYNC;
/* Initialise UART - when booting from u-boot, the UART is not disabled /* Initialise UART - when booting from u-boot, the UART is not disabled
* so if we dont initalize here, our serial console gets hosed */ * so if we dont initalize here, our serial console gets hosed */
p0.h = hi(BFIN_UART_LCR); p0.h = hi(BFIN_UART_LCR);
@ -143,62 +66,13 @@ ENTRY(__start)
w[p0] = r0.L; /* To enable UART clock */ w[p0] = r0.L; /* To enable UART clock */
ssync; ssync;
/* Initialize stack pointer */ rts;
sp.l = lo(INITIAL_STACK); ENDPROC(_mach_early_start)
sp.h = hi(INITIAL_STACK);
fp = sp;
usp = sp;
#ifdef CONFIG_EARLY_PRINTK
SP += -12;
call _init_early_exception_vectors;
SP += 12;
#endif
/* Put The Code for PLL Programming and SDRAM Programming in L1 ISRAM */
call _bf53x_relocate_l1_mem;
#if CONFIG_BFIN_KERNEL_CLOCK
call _start_dma_code;
#endif
/* This section keeps the processor in supervisor mode
* during kernel boot. Switches to user mode at end of boot.
* See page 3-9 of Hardware Reference manual for documentation.
*/
/* EVT15 = _real_start */
p0.l = lo(EVT15);
p0.h = hi(EVT15);
p1.l = _real_start;
p1.h = _real_start;
[p0] = p1;
csync;
p0.l = lo(IMASK);
p0.h = hi(IMASK);
p1.l = IMASK_IVG15;
p1.h = 0x0;
[p0] = p1;
csync;
raise 15;
p0.l = .LWAIT_HERE;
p0.h = .LWAIT_HERE;
reti = p0;
#if ANOMALY_05000281
nop; nop; nop;
#endif
rti;
.LWAIT_HERE:
jump .LWAIT_HERE;
ENDPROC(__start)
__FINIT __FINIT
.section .l1.text .section .l1.text
#if CONFIG_BFIN_KERNEL_CLOCK #ifdef CONFIG_BFIN_KERNEL_CLOCK
ENTRY(_start_dma_code) ENTRY(_start_dma_code)
p0.h = hi(SICA_IWR0); p0.h = hi(SICA_IWR0);
p0.l = lo(SICA_IWR0); p0.l = lo(SICA_IWR0);

131
arch/blackfin/mach-common/head.S
View File

@ -14,13 +14,140 @@
#include <asm/thread_info.h> #include <asm/thread_info.h>
#include <asm/trace.h> #include <asm/trace.h>
__INIT
#define INITIAL_STACK (L1_SCRATCH_START + L1_SCRATCH_LENGTH - 12)
ENTRY(__start)
/* R0: argument of command line string, passed from uboot, save it */
R7 = R0;
/* Enable Cycle Counter and Nesting Of Interrupts */
#ifdef CONFIG_BFIN_SCRATCH_REG_CYCLES
R0 = SYSCFG_SNEN;
#else
R0 = SYSCFG_SNEN | SYSCFG_CCEN;
#endif
SYSCFG = R0;
R0 = 0;
/* Clear Out All the data and pointer Registers */
R1 = R0;
R2 = R0;
R3 = R0;
R4 = R0;
R5 = R0;
R6 = R0;
P0 = R0;
P1 = R0;
P2 = R0;
P3 = R0;
P4 = R0;
P5 = R0;
LC0 = r0;
LC1 = r0;
L0 = r0;
L1 = r0;
L2 = r0;
L3 = r0;
/* Clear Out All the DAG Registers */
B0 = r0;
B1 = r0;
B2 = r0;
B3 = r0;
I0 = r0;
I1 = r0;
I2 = r0;
I3 = r0;
M0 = r0;
M1 = r0;
M2 = r0;
M3 = r0;
trace_buffer_init(p0,r0);
P0 = R1;
R0 = R1;
/* Turn off the icache */
p0.l = LO(IMEM_CONTROL);
p0.h = HI(IMEM_CONTROL);
R1 = [p0];
R0 = ~ENICPLB;
R0 = R0 & R1;
[p0] = R0;
SSYNC;
/* Turn off the dcache */
p0.l = LO(DMEM_CONTROL);
p0.h = HI(DMEM_CONTROL);
R1 = [p0];
R0 = ~ENDCPLB;
R0 = R0 & R1;
[p0] = R0;
SSYNC;
/* Let each Blackfin family do its own thing */
call _mach_early_start;
/* Initialize stack pointer */
sp.l = lo(INITIAL_STACK);
sp.h = hi(INITIAL_STACK);
fp = sp;
usp = sp;
#ifdef CONFIG_EARLY_PRINTK
call _init_early_exception_vectors;
#endif
/* Put The Code for PLL Programming and SDRAM Programming in L1 ISRAM */
call _bf53x_relocate_l1_mem;
#ifdef CONFIG_BFIN_KERNEL_CLOCK
call _start_dma_code;
#endif
/* This section keeps the processor in supervisor mode
* during kernel boot. Switches to user mode at end of boot.
* See page 3-9 of Hardware Reference manual for documentation.
*/
/* EVT15 = _real_start */
p0.l = lo(EVT15);
p0.h = hi(EVT15);
p1.l = _real_start;
p1.h = _real_start;
[p0] = p1;
csync;
p0.l = lo(IMASK);
p0.h = hi(IMASK);
p1.l = IMASK_IVG15;
p1.h = 0x0;
[p0] = p1;
csync;
raise 15;
p0.l = .LWAIT_HERE;
p0.h = .LWAIT_HERE;
reti = p0;
#if ANOMALY_05000281
nop; nop; nop;
#endif
rti;
.LWAIT_HERE:
jump .LWAIT_HERE;
ENDPROC(__start)
/* A little BF561 glue ... */ /* A little BF561 glue ... */
#ifndef WDOG_CTL #ifndef WDOG_CTL
# define WDOG_CTL WDOGA_CTL # define WDOG_CTL WDOGA_CTL
#endif #endif
__INIT
ENTRY(_real_start) ENTRY(_real_start)
/* Enable nested interrupts */ /* Enable nested interrupts */
[--sp] = reti; [--sp] = reti;