*/
#include <linux/linkage.h>
+#include <linux/init.h>
#include <asm/blackfin.h>
+#include <asm/trace.h>
+
#if CONFIG_BFIN_KERNEL_CLOCK
#include <asm/mach/mem_init.h>
#endif
.extern ___bss_start
.extern _bf53x_relocate_l1_mem
-#define INITIAL_STACK 0xFFB01000
+#define INITIAL_STACK 0xFFB01000
-.text
+__INIT
ENTRY(__start)
-ENTRY(__stext)
/* R0: argument of command line string, passed from uboot, save it */
R7 = R0;
- /* Set the SYSCFG register */
+ /* Set the SYSCFG register:
+ * Enable Cycle Counter and Nesting Of Interrupts (3rd Bit)
+ */
R0 = 0x36;
- SYSCFG = R0; /*Enable Cycle Counter and Nesting Of Interrupts(3rd Bit)*/
+ SYSCFG = R0;
R0 = 0;
- /* Clear Out All the data and pointer Registers*/
+ /* Clear Out All the data and pointer Registers */
R1 = R0;
R2 = R0;
R3 = R0;
L2 = r0;
L3 = r0;
- /* Clear Out All the DAG Registers*/
+ /* Clear Out All the DAG Registers */
B0 = r0;
B1 = r0;
B2 = r0;
M2 = r0;
M3 = r0;
+ trace_buffer_start(p0,r0);
+ P0 = R1;
+ R0 = R1;
+
/* Turn off the icache */
p0.l = (IMEM_CONTROL & 0xFFFF);
p0.h = (IMEM_CONTROL >> 16);
SSYNC;
#endif
- /*Initialise UART*/
+ /* Initialise UART - when booting from u-boot, the UART is not disabled
+ * so if we dont initalize here, our serial console gets hosed */
p0.h = hi(UART_LCR);
p0.l = lo(UART_LCR);
r0 = 0x0(Z);
p0.h = hi(UART_DLL);
p0.l = lo(UART_DLL);
- r0 = 0x00(Z);
+ r0 = 0x0(Z);
w[p0] = r0.L;
ssync;
#if CONFIG_BFIN_KERNEL_CLOCK
call _start_dma_code;
#endif
+
/* Code for initializing Async memory banks */
p2.h = hi(EBIU_AMBCTL1);
.LWAIT_HERE:
jump .LWAIT_HERE;
+ENDPROC(__start)
ENTRY(_real_start)
[ -- sp ] = reti;
p2.h = ___bss_stop;
r0 = 0;
p2 -= p1;
- lsetup (.L_clear_bss, .L_clear_bss ) lc0 = p2;
+ lsetup (.L_clear_bss, .L_clear_bss) lc0 = p2;
.L_clear_bss:
B[p1++] = r0;
r0 = r0 >> 1;
p2 = r0;
r0 = 0;
- lsetup (.L_clear_zero, .L_clear_zero ) lc0 = p2;
+ lsetup (.L_clear_zero, .L_clear_zero) lc0 = p2;
.L_clear_zero:
W[p1++] = r0;
r1 = p3;
[p1] = r1;
-
/*
- * load the current thread pointer and stack
+ * load the current thread pointer and stack
*/
r1.l = _init_thread_union;
r1.h = _init_thread_union;
sp = r1;
usp = sp;
fp = sp;
- call _start_kernel;
-.L_exit:
- jump.s .L_exit;
+ jump.l _start_kernel;
+ENDPROC(_real_start)
+
+__FINIT
.section .l1.text
#if CONFIG_BFIN_KERNEL_CLOCK
SSYNC;
RTS;
+ENDPROC(_start_dma_code)
#endif /* CONFIG_BFIN_KERNEL_CLOCK */
ENTRY(_bfin_reset)
SSYNC;
#if defined(CONFIG_MTD_M25P80)
-/*
- * The following code fix the SPI flash reboot issue,
- * /CS signal of the chip which is using PF10 return to GPIO mode
- */
+ /*
+ * The following code fix the SPI flash reboot issue,
+ * /CS signal of the chip which is using PF10 return to GPIO mode
+ */
p0.h = hi(PORTF_FER);
p0.l = lo(PORTF_FER);
r0.l = 0x0000;
w[p0] = r0.l;
SSYNC;
-/* /CS return to high */
+ /* /CS return to high */
p0.h = hi(PORTFIO);
p0.l = lo(PORTFIO);
r0.l = 0xFFFF;
w[p0] = r0.l;
SSYNC;
-/* Delay some time, This is necessary */
+ /* Delay some time, This is necessary */
r1.h = 0;
r1.l = 0x400;
p1 = r1;
- lsetup (_delay_lab1,_delay_lab1_end ) lc1 = p1;
-_delay_lab1:
+ lsetup (.L_delay_lab1, .L_delay_lab1_end) lc1 = p1;
+.L_delay_lab1:
r0.h = 0;
r0.l = 0x8000;
p0 = r0;
- lsetup (_delay_lab0,_delay_lab0_end ) lc0 = p0;
-_delay_lab0:
+ lsetup (.L_delay_lab0, .L_delay_lab0_end) lc0 = p0;
+.L_delay_lab0:
nop;
-_delay_lab0_end:
+.L_delay_lab0_end:
nop;
-_delay_lab1_end:
+.L_delay_lab1_end:
nop;
#endif