diff options
| -rw-r--r-- | arch/microblaze/cpu/start.S | 69 | ||||
| -rw-r--r-- | include/configs/microblaze-generic.h | 9 |
2 files changed, 40 insertions, 38 deletions
diff --git a/arch/microblaze/cpu/start.S b/arch/microblaze/cpu/start.S index 93a9efd..9077f74 100644 --- a/arch/microblaze/cpu/start.S +++ b/arch/microblaze/cpu/start.S @@ -30,6 +30,13 @@ .text .global _start _start: + /* + * reserve registers: + * r10: Stores little/big endian offset for vectors + * r2: Stores imm opcode + * r3: Stores brai opcode + */ + mts rmsr, r0 /* disable cache */ addi r1, r0, CONFIG_SYS_INIT_SP_OFFSET addi r1, r1, -4 /* Decrement SP to top of memory */ @@ -44,52 +51,34 @@ _start: * 4b) BIG endian - r10 contains 0x0 because 0x2 offset is on addr 0x3 */ addik r6, r0, 0x2 /* BIG/LITTLE endian offset */ - swi r6, r0, 0 - lbui r10, r0, 0 - swi r6, r0, 0x40 - swi r10, r0, 0x50 - - /* add opcode instruction for 32bit jump - 2 instruction imm & brai*/ - addi r6, r0, 0xb0000000 /* hex b000 opcode imm */ - swi r6, r0, 0x0 /* reset address */ - swi r6, r0, 0x8 /* user vector exception */ - swi r6, r0, 0x10 /* interrupt */ - swi r6, r0, 0x20 /* hardware exception */ - - addi r6, r0, 0xb8080000 /* hew b808 opcode brai*/ - swi r6, r0, 0x4 /* reset address */ - swi r6, r0, 0xC /* user vector exception */ - swi r6, r0, 0x14 /* interrupt */ - swi r6, r0, 0x24 /* hardware exception */ + lwi r7, r0, 0x28 + swi r6, r0, 0x28 /* used first unused MB vector */ + lbui r10, r0, 0x28 /* used first unused MB vector */ + swi r7, r0, 0x28 + + /* add opcode instruction for 32bit jump - 2 instruction imm & brai */ + addi r2, r0, 0xb0000000 /* hex b000 opcode imm */ + addi r3, r0, 0xb8080000 /* hew b808 opcode brai */ #ifdef CONFIG_SYS_RESET_ADDRESS /* reset address */ + swi r2, r0, 0x0 /* reset address - imm opcode */ + swi r3, r0, 0x4 /* reset address - brai opcode */ + addik r6, r0, CONFIG_SYS_RESET_ADDRESS sw r6, r1, r0 - lhu r7, r1, r0 - shi r7, r0, 0x2 - shi r6, r0, 0x6 -/* - * Copy U-Boot code to CONFIG_SYS_TEXT_BASE - * solve problem with sbrk_base - */ -#if (CONFIG_SYS_RESET_ADDRESS != CONFIG_SYS_TEXT_BASE) - addi r4, r0, __end - addi r5, r0, __text_start - rsub r4, r5, r4 /* size = __end - __text_start */ - addi r6, r0, CONFIG_SYS_RESET_ADDRESS /* source address */ - addi r7, r0, 0 /* counter */ -4: - lw r8, r6, r7 - sw r8, r5, r7 - addi r7, r7, 0x4 - cmp r8, r4, r7 - blti r8, 4b -#endif + lhu r7, r1, r10 + rsubi r8, r10, 0x2 + sh r7, r0, r8 + rsubi r8, r10, 0x6 + sh r6, r0, r8 #endif #ifdef CONFIG_SYS_USR_EXCEP /* user_vector_exception */ + swi r2, r0, 0x8 /* user vector exception - imm opcode */ + swi r3, r0, 0xC /* user vector exception - brai opcode */ + addik r6, r0, _exception_handler sw r6, r1, r0 /* @@ -121,6 +110,9 @@ _start: #ifdef CONFIG_SYS_INTC_0 /* interrupt_handler */ + swi r2, r0, 0x10 /* interrupt - imm opcode */ + swi r3, r0, 0x14 /* interrupt - brai opcode */ + addik r6, r0, _interrupt_handler sw r6, r1, r0 lhu r7, r1, r10 @@ -131,6 +123,9 @@ _start: #endif /* hardware exception */ + swi r2, r0, 0x20 /* hardware exception - imm opcode */ + swi r3, r0, 0x24 /* hardware exception - brai opcode */ + addik r6, r0, _hw_exception_handler sw r6, r1, r0 lhu r7, r1, r10 diff --git a/include/configs/microblaze-generic.h b/include/configs/microblaze-generic.h index 090ab3b..a811b76 100644 --- a/include/configs/microblaze-generic.h +++ b/include/configs/microblaze-generic.h @@ -44,7 +44,7 @@ # define CONFIG_SYS_NS16550_REG_SIZE -4 # define CONFIG_CONS_INDEX 1 # define CONFIG_SYS_NS16550_COM1 \ - (XILINX_UART16550_BASEADDR + 0x1000 + 0x3) + (XILINX_UART16550_BASEADDR + 0x1000) # define CONFIG_SYS_NS16550_CLK XILINX_UART16550_CLOCK_HZ # define CONFIG_BAUDRATE 115200 @@ -60,6 +60,7 @@ /*#define CONFIG_SYS_RESET_ADDRESS CONFIG_SYS_TEXT_BASE*/ /* ethernet */ +#undef CONFIG_SYS_ENET #ifdef XILINX_EMACLITE_BASEADDR # define CONFIG_XILINX_EMACLITE 1 # define CONFIG_SYS_ENET @@ -243,6 +244,7 @@ #ifndef CONFIG_SYS_ENET # undef CONFIG_CMD_NET # undef CONFIG_NET_MULTI +# undef CONFIG_CMD_NFS #else # define CONFIG_CMD_PING # define CONFIG_CMD_DHCP @@ -325,4 +327,9 @@ # define CONFIG_SYS_PROMPT_HUSH_PS2 "> " #endif +/* Enable flat device tree support */ +#define CONFIG_LMB 1 +#define CONFIG_FIT 1 +#define CONFIG_OF_LIBFDT 1 + #endif /* __CONFIG_H */ |