diff options
Diffstat (limited to 'arch/m68k/cpu/mcf5445x/start.S')
| -rw-r--r-- | arch/m68k/cpu/mcf5445x/start.S | 273 |
1 files changed, 263 insertions, 10 deletions
diff --git a/arch/m68k/cpu/mcf5445x/start.S b/arch/m68k/cpu/mcf5445x/start.S index 99060141d8..5fc944d2f3 100644 --- a/arch/m68k/cpu/mcf5445x/start.S +++ b/arch/m68k/cpu/mcf5445x/start.S @@ -2,6 +2,9 @@ * Copyright (C) 2003 Josef Baumgartner <josef.baumgartner@telex.de> * Based on code from Bernhard Kuhn <bkuhn@metrowerks.com> * + * Copyright 2010-2012 Freescale Semiconductor, Inc. + * TsiChung Liew (Tsi-Chung.Liew@freescale.com) + * * See file CREDITS for list of people who contributed to this * project. * @@ -21,8 +24,10 @@ * MA 02111-1307 USA */ +#include <common.h> #include <asm-offsets.h> #include <config.h> +#include <timestamp.h> #include "version.h" #include <asm/cache.h> @@ -43,8 +48,9 @@ addl #60,%sp; /* space for 15 regs */ \ rte; -#if defined(CONFIG_CF_SBF) +#if defined(CONFIG_SERIAL_BOOT) #define ASM_DRAMINIT (asm_dram_init - CONFIG_SYS_TEXT_BASE + CONFIG_SYS_INIT_RAM_ADDR) +#define ASM_DRAMINIT_N (asm_dram_init - TEXT_BASE) #define ASM_SBF_IMG_HDR (asm_sbf_img_hdr - CONFIG_SYS_TEXT_BASE + CONFIG_SYS_INIT_RAM_ADDR) #endif @@ -55,10 +61,15 @@ * These vectors are to catch any un-intended traps. */ _vectors: -#if defined(CONFIG_CF_SBF) +#if defined(CONFIG_SERIAL_BOOT) INITSP: .long 0 /* Initial SP */ +#ifdef CONFIG_CF_SBF INITPC: .long ASM_DRAMINIT /* Initial PC */ +#endif +#ifdef CONFIG_SYS_NAND_BOOT +INITPC: .long ASM_DRAMINIT_N /* Initial PC */ +#endif #else @@ -95,7 +106,7 @@ vector1D: .long _FAULT /* Autovector Level 5 */ vector1E: .long _FAULT /* Autovector Level 6 */ vector1F: .long _FAULT /* Autovector Level 7 */ -#if !defined(CONFIG_CF_SBF) +#if !defined(CONFIG_SERIAL_BOOT) /* TRAP #0 - #15 */ vector20_2F: @@ -138,16 +149,26 @@ vector192_255: .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT #endif -#if defined(CONFIG_CF_SBF) +#if defined(CONFIG_SERIAL_BOOT) /* Image header: chksum 4 bytes, len 4 bytes, img dest 4 bytes */ asm_sbf_img_hdr: .long 0x00000000 /* checksum, not yet implemented */ - .long 0x00030000 /* image length */ + .long 0x00040000 /* image length */ .long CONFIG_SYS_TEXT_BASE /* image to be relocated at */ asm_dram_init: move.w #0x2700,%sr /* Mask off Interrupt */ +#ifdef CONFIG_SYS_NAND_BOOT + /* for assembly stack */ + move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0 + movec %d0, %RAMBAR1 + + move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp + clr.l %sp@- +#endif + +#ifdef CONFIG_CF_SBF move.l #CONFIG_SYS_INIT_RAM_ADDR, %d0 movec %d0, %VBR @@ -180,7 +201,90 @@ asm_dram_init: move.l #(CONFIG_SYS_CS0_CTRL), (%a1) move.l #0xFC008004, %a1 move.l #(CONFIG_SYS_CS0_MASK), (%a1) +#endif /* CONFIG_CF_SBF */ + +#ifdef CONFIG_MCF5441x + /* TC: enable all peripherals, + in the future only enable certain peripherals */ + move.l #0xFC04002D, %a1 +#if defined(CONFIG_CF_SBF) + move.b #23, (%a1) /* dspi */ +#endif + move.b #46, (%a1) /* DDR */ + + /* slew settings */ + move.l #0xEC094060, %a1 + move.b #0, (%a1) + + /* use vco instead of cpu*2 clock for ddr clock */ + move.l #0xEC09001A, %a1 + move.w #0xE01D, (%a1) + + /* DDR settings */ + move.l #0xFC0B8180, %a1 + move.l #0x00000000, (%a1) + move.l #0x40000000, (%a1) + + move.l #0xFC0B81AC, %a1 + move.l #0x01030203, (%a1) + + move.l #0xFC0B8000, %a1 + move.l #0x01010101, (%a1)+ /* 0x00 */ + move.l #0x00000101, (%a1)+ /* 0x04 */ + move.l #0x01010100, (%a1)+ /* 0x08 */ + move.l #0x01010000, (%a1)+ /* 0x0C */ + move.l #0x00010101, (%a1)+ /* 0x10 */ + move.l #0xFC0B8018, %a1 + move.l #0x00010100, (%a1)+ /* 0x18 */ + move.l #0x00000001, (%a1)+ /* 0x1C */ + move.l #0x01000001, (%a1)+ /* 0x20 */ + move.l #0x00000100, (%a1)+ /* 0x24 */ + move.l #0x00010001, (%a1)+ /* 0x28 */ + move.l #0x00000200, (%a1)+ /* 0x2C */ + move.l #0x01000002, (%a1)+ /* 0x30 */ + move.l #0x00000000, (%a1)+ /* 0x34 */ + move.l #0x00000100, (%a1)+ /* 0x38 */ + move.l #0x02000100, (%a1)+ /* 0x3C */ + move.l #0x02000407, (%a1)+ /* 0x40 */ + move.l #0x02030007, (%a1)+ /* 0x44 */ + move.l #0x02000100, (%a1)+ /* 0x48 */ + move.l #0x0A030203, (%a1)+ /* 0x4C */ + move.l #0x00020708, (%a1)+ /* 0x50 */ + move.l #0x00050008, (%a1)+ /* 0x54 */ + move.l #0x04030002, (%a1)+ /* 0x58 */ + move.l #0x00000004, (%a1)+ /* 0x5C */ + move.l #0x020A0000, (%a1)+ /* 0x60 */ + move.l #0x0C00000E, (%a1)+ /* 0x64 */ + move.l #0x00002004, (%a1)+ /* 0x68 */ + move.l #0x00000000, (%a1)+ /* 0x6C */ + move.l #0x00100010, (%a1)+ /* 0x70 */ + move.l #0x00100010, (%a1)+ /* 0x74 */ + move.l #0x00000000, (%a1)+ /* 0x78 */ + move.l #0x07990000, (%a1)+ /* 0x7C */ + move.l #0xFC0B80A0, %a1 + move.l #0x00000000, (%a1)+ /* 0xA0 */ + move.l #0x00C80064, (%a1)+ /* 0xA4 */ + move.l #0x44520002, (%a1)+ /* 0xA8 */ + move.l #0x00C80023, (%a1)+ /* 0xAC */ + move.l #0xFC0B80B4, %a1 + move.l #0x0000C350, (%a1) /* 0xB4 */ + move.l #0xFC0B80E0, %a1 + move.l #0x04000000, (%a1)+ /* 0xE0 */ + move.l #0x03000304, (%a1)+ /* 0xE4 */ + move.l #0x40040000, (%a1)+ /* 0xE8 */ + move.l #0xC0004004, (%a1)+ /* 0xEC */ + move.l #0x0642C000, (%a1)+ /* 0xF0 */ + move.l #0x00000642, (%a1)+ /* 0xF4 */ + move.l #0xFC0B8024, %a1 + tpf + move.l #0x01000100, (%a1) /* 0x24 */ + + move.l #0x2000, %d1 + jsr asm_delay +#endif /* CONFIG_MCF5441x */ + +#ifdef CONFIG_MCF5445x /* Dram Initialization a1, a2, and d0 */ /* mscr sdram */ move.l #0xFC0A4074, %a1 @@ -203,7 +307,9 @@ dramsz_loop: add.l #1, %d1 cmp.l #1, %d2 bne dramsz_loop - +#ifdef CONFIG_SYS_NAND_BOOT + beq asm_nand_chk_status +#endif /* SDRAM Chip 0 and 1 */ move.l #(CONFIG_SYS_SDRAM_BASE), (%a1) or.l %d1, (%a1) @@ -275,7 +381,9 @@ dramsz_loop: move.l #2000, %d1 jsr asm_delay +#endif /* CONFIG_MCF5445x */ +#ifdef CONFIG_CF_SBF /* * DSPI Initialization * a0 - general, sram - 0x80008000 - 32, see M54455EVB.h @@ -286,15 +394,28 @@ dramsz_loop: */ /* Enable pins for DSPI mode - chip-selects are enabled later */ asm_dspi_init: +#ifdef CONFIG_MCF5441x + move.l #0xEC09404E, %a1 + move.l #0xEC09404F, %a2 + move.b #0xFF, (%a1) + move.b #0x80, (%a2) +#endif + +#ifdef CONFIG_MCF5445x move.l #0xFC0A4063, %a0 move.b #0x7F, (%a0) - +#endif /* Configure DSPI module */ move.l #0xFC05C000, %a0 move.l #0x80FF0C00, (%a0) /* Master, clear TX/RX FIFO */ move.l #0xFC05C00C, %a0 +#ifdef CONFIG_MCF5441x + move.l #0x3E000016, (%a0) +#endif +#ifdef CONFIG_MCF5445x move.l #0x3E000011, (%a0) +#endif move.l #0xFC05C034, %a2 /* dtfr */ move.l #0xFC05C03B, %a3 /* drfr */ @@ -379,19 +500,148 @@ asm_dspi_rd_status: move.b (%a3), %d1 rts +#endif /* CONFIG_CF_SBF */ + +#ifdef CONFIG_SYS_NAND_BOOT + /* copy 4 boot pages to dram as soon as possible */ + /* each page is 996 bytes (1056 total with 60 ECC bytes */ + move.l #0x00000000, %a1 /* src */ + move.l #TEXT_BASE, %a2 /* dst */ + move.l #0x3E0, %d0 /* sz in long */ + +asm_boot_nand_copy: + move.l (%a1)+, (%a2)+ + subq.l #1, %d0 + bne asm_boot_nand_copy + + /* jump to memory and execute */ + move.l #(asm_nand_init), %a0 + jmp (%a0) + +asm_nand_init: + /* exit nand boot-mode */ + move.l #0xFC0FFF30, %a1 + or.l #0x00000040, %d1 + move.l %d1, (%a1) + + /* initialize general use internal ram */ + move.l #0, %d0 + move.l #(CACR_STATUS), %a1 /* CACR */ + move.l #(ICACHE_STATUS), %a2 /* icache */ + move.l #(DCACHE_STATUS), %a3 /* dcache */ + move.l %d0, (%a1) + move.l %d0, (%a2) + move.l %d0, (%a3) + + /* invalidate and disable cache */ + move.l #0x01004100, %d0 /* Invalidate cache cmd */ + movec %d0, %CACR /* Invalidate cache */ + move.l #0, %d0 + movec %d0, %ACR0 + movec %d0, %ACR1 + movec %d0, %ACR2 + movec %d0, %ACR3 + + /* Must disable global address */ + move.l #0xFC008000, %a1 + move.l #(CONFIG_SYS_CS0_BASE), (%a1) + move.l #0xFC008008, %a1 + move.l #(CONFIG_SYS_CS0_CTRL), (%a1) + move.l #0xFC008004, %a1 + move.l #(CONFIG_SYS_CS0_MASK), (%a1) + + /* NAND port configuration */ + move.l #0xEC094048, %a1 + move.b #0xFD, (%a1)+ + move.b #0x5F, (%a1)+ + move.b #0x04, (%a1)+ + + /* reset nand */ + move.l #0xFC0FFF38, %a1 /* isr */ + move.l #0x000e0000, (%a1) + move.l #0xFC0FFF08, %a2 + move.l #0x00000000, (%a2)+ /* car */ + move.l #0x11000000, (%a2)+ /* rar */ + move.l #0x00000000, (%a2)+ /* rpt */ + move.l #0x00000000, (%a2)+ /* rai */ + move.l #0xFC0FFF2c, %a2 /* cfg */ + move.l #0x00000000, (%a2)+ /* secsz */ + move.l #0x000e0681, (%a2)+ + move.l #0xFC0FFF04, %a2 /* cmd2 */ + move.l #0xFF404001, (%a2) + move.l #0x000e0000, (%a1) + + move.l #0x2000, %d1 + jsr asm_delay + + /* setup nand */ + move.l #0xFC0FFF00, %a1 + move.l #0x30700000, (%a1)+ /* cmd1 */ + move.l #0x007EF000, (%a1)+ /* cmd2 */ + + move.l #0xFC0FFF2C, %a1 + move.l #0x00000841, (%a1)+ /* secsz */ + move.l #0x000e0681, (%a1)+ /* cfg */ + + move.l #100, %d4 /* 100 pages ~200KB */ + move.l #4, %d2 /* start at 4 */ + move.l #0xFC0FFF04, %a0 /* cmd2 */ + move.l #0xFC0FFF0C, %a1 /* rar */ + move.l #(TEXT_BASE + 0xF80), %a2 /* dst */ + +asm_nand_read: + move.l #0x11000000, %d0 /* rar */ + or.l %d2, %d0 + move.l %d0, (%a1) + add.l #1, %d2 + + move.l (%a0), %d0 /* cmd2 */ + or.l #1, %d0 + move.l %d0, (%a0) + + move.l #0x200, %d1 + jsr asm_delay + +asm_nand_chk_status: + move.l #0xFC0FFF38, %a4 /* isr */ + move.l (%a4), %d0 + and.l #0x40000000, %d0 + tst.l %d0 + beq asm_nand_chk_status + + move.l #0xFC0FFF38, %a4 /* isr */ + move.l (%a4), %d0 + or.l #0x000E0000, %d0 + move.l %d0, (%a4) + + move.l #0x200, %d3 + move.l #0xFC0FC000, %a3 /* buf 1 */ +asm_nand_copy: + move.l (%a3)+, (%a2)+ + subq.l #1, %d3 + bgt asm_nand_copy + + subq.l #1, %d4 + bgt asm_nand_read + + /* jump to memory and execute */ + move.l #(TEXT_BASE + 0x400), %a0 + jmp (%a0) + +#endif /* CONFIG_SYS_NAND_BOOT */ asm_delay: nop subq.l #1, %d1 bne asm_delay rts -#endif /* CONFIG_CF_SBF */ +#endif /* CONFIG_CF_SBF || CONFIG_NAND_U_BOOT */ .text . = 0x400 .globl _start _start: -#if !defined(CONFIG_CF_SBF) +#if !defined(CONFIG_SERIAL_BOOT) nop nop move.w #0x2700,%sr /* Mask off Interrupt */ @@ -418,12 +668,15 @@ _start: movec %d0, %ACR1 movec %d0, %ACR2 movec %d0, %ACR3 +#else + move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0 + movec %d0, %RAMBAR1 +#endif /* set stackpointer to end of internal ram to get some stackspace for the first c-code */ move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp clr.l %sp@- -#endif move.l #__got_start, %a5 /* put relocation table address to a5 */ |
