diff options
Diffstat (limited to 'arch/blackfin/mach-bf537')
| -rw-r--r-- | arch/blackfin/mach-bf537/head.S | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/arch/blackfin/mach-bf537/head.S b/arch/blackfin/mach-bf537/head.S index 2c2652bee7e..3f490bfb73f 100644 --- a/arch/blackfin/mach-bf537/head.S +++ b/arch/blackfin/mach-bf537/head.S @@ -40,7 +40,7 @@ .extern ___bss_start .extern _bf53x_relocate_l1_mem -#define INITIAL_STACK 0xFFB01000 +#define INITIAL_STACK 0xFFB01000 .text @@ -48,12 +48,14 @@ 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; @@ -75,7 +77,7 @@ ENTRY(__stext) L2 = r0; L3 = r0; - /* Clear Out All the DAG Registers*/ + /* Clear Out All the DAG Registers */ B0 = r0; B1 = r0; B2 = r0; @@ -191,7 +193,7 @@ ENTRY(__stext) p0.h = hi(UART_DLL); p0.l = lo(UART_DLL); - r0 = 0x00(Z); + r0 = 0x0(Z); w[p0] = r0.L; ssync; @@ -218,6 +220,7 @@ ENTRY(__stext) #if CONFIG_BFIN_KERNEL_CLOCK call _start_dma_code; #endif + /* Code for initializing Async memory banks */ p2.h = hi(EBIU_AMBCTL1); @@ -291,7 +294,7 @@ ENTRY(_real_start) 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; @@ -306,7 +309,7 @@ ENTRY(_real_start) 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; @@ -328,9 +331,8 @@ ENTRY(_real_start) 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; |