diff options
Diffstat (limited to 'kernel/arch/cris/boot/compressed')
| -rw-r--r-- | kernel/arch/cris/boot/compressed/Makefile | 38 | ||||
| -rw-r--r-- | kernel/arch/cris/boot/compressed/README | 24 | ||||
| -rw-r--r-- | kernel/arch/cris/boot/compressed/decompress_v10.lds | 30 | ||||
| -rw-r--r-- | kernel/arch/cris/boot/compressed/decompress_v32.lds | 30 | ||||
| -rw-r--r-- | kernel/arch/cris/boot/compressed/head_v10.S | 126 | ||||
| -rw-r--r-- | kernel/arch/cris/boot/compressed/head_v32.S | 145 | ||||
| -rw-r--r-- | kernel/arch/cris/boot/compressed/misc.c | 376 |
7 files changed, 769 insertions, 0 deletions
diff --git a/kernel/arch/cris/boot/compressed/Makefile b/kernel/arch/cris/boot/compressed/Makefile new file mode 100644 index 000000000..8fe9338c1 --- /dev/null +++ b/kernel/arch/cris/boot/compressed/Makefile @@ -0,0 +1,38 @@ +# +# arch/cris/boot/compressed/Makefile +# + +asflags-y += $(LINUXINCLUDE) +ccflags-y += -O2 $(LINUXINCLUDE) + +# asflags-$(CONFIG_ETRAX_ARCH_V32) += -I$(srctree)/include/asm/mach \ +# -I$(srctree)/include/asm/arch +# ccflags-$(CONFIG_ETRAX_ARCH_V32) += -O2 -I$(srctree)/include/asm/mach +# -I$(srctree)/include/asm/arch + +arch-$(CONFIG_ETRAX_ARCH_V10) = v10 +arch-$(CONFIG_ETRAX_ARCH_V32) = v32 + +ldflags-y += -T $(srctree)/$(src)/decompress_$(arch-y).lds + +OBJECTS-$(CONFIG_ETRAX_ARCH_V32) = $(obj)/head_v32.o +OBJECTS-$(CONFIG_ETRAX_ARCH_V10) = $(obj)/head_v10.o +OBJECTS= $(OBJECTS-y) $(obj)/misc.o +OBJCOPYFLAGS = -O binary --remove-section=.bss + +quiet_cmd_image = BUILD $@ +cmd_image = cat $(obj)/decompress.bin $(obj)/piggy.gz > $@ + +targets := vmlinux piggy.gz decompress.o decompress.bin + +$(obj)/decompress.o: $(OBJECTS) FORCE + $(call if_changed,ld) + +$(obj)/decompress.bin: $(obj)/decompress.o FORCE + $(call if_changed,objcopy) + +$(obj)/vmlinux: $(obj)/piggy.gz $(obj)/decompress.bin FORCE + $(call if_changed,image) + +$(obj)/piggy.gz: $(obj)/../Image FORCE + $(call if_changed,gzip) diff --git a/kernel/arch/cris/boot/compressed/README b/kernel/arch/cris/boot/compressed/README new file mode 100644 index 000000000..182c5d757 --- /dev/null +++ b/kernel/arch/cris/boot/compressed/README @@ -0,0 +1,24 @@ +Creation of the self-extracting compressed kernel image (vmlinuz) +----------------------------------------------------------------- + +This can be slightly confusing because it's a process with many steps. + +The kernel object built by the arch/etrax100/Makefile, vmlinux, is split +by that makefile into text and data binary files, vmlinux.text and +vmlinux.data. + +Those files together with a ROM filesystem can be catted together and +burned into a flash or executed directly at the DRAM origin. + +They can also be catted together and compressed with gzip, which is what +happens in this makefile. Together they make up piggy.img. + +The decompressor is built into the file decompress.o. It is turned into +the binary file decompress.bin, which is catted together with piggy.img +into the file vmlinuz. It can be executed in an arbitrary place in flash. + +Be careful - it assumes some things about free locations in DRAM. It +assumes the DRAM starts at 0x40000000 and that it is at least 8 MB, +so it puts its code at 0x40700000, and initial stack at 0x40800000. + +-Bjorn diff --git a/kernel/arch/cris/boot/compressed/decompress_v10.lds b/kernel/arch/cris/boot/compressed/decompress_v10.lds new file mode 100644 index 000000000..e80f4594d --- /dev/null +++ b/kernel/arch/cris/boot/compressed/decompress_v10.lds @@ -0,0 +1,30 @@ +/* OUTPUT_FORMAT(elf32-us-cris) */ +OUTPUT_FORMAT(elf32-cris) + +MEMORY + { + dram : ORIGIN = 0x40700000, + LENGTH = 0x00100000 + } + +SECTIONS +{ + .text : + { + _stext = . ; + *(.text) + *(.rodata) + *(.rodata.*) + _etext = . ; + } > dram + .data : + { + *(.data) + _edata = . ; + } > dram + .bss : + { + *(.bss) + _end = ALIGN( 0x10 ) ; + } > dram +} diff --git a/kernel/arch/cris/boot/compressed/decompress_v32.lds b/kernel/arch/cris/boot/compressed/decompress_v32.lds new file mode 100644 index 000000000..3c837feca --- /dev/null +++ b/kernel/arch/cris/boot/compressed/decompress_v32.lds @@ -0,0 +1,30 @@ +/*#OUTPUT_FORMAT(elf32-us-cris) */ +OUTPUT_ARCH (crisv32) + +MEMORY + { + dram : ORIGIN = 0x40700000, + LENGTH = 0x00100000 + } + +SECTIONS +{ + .text : + { + _stext = . ; + *(.text) + *(.rodata) + *(.rodata.*) + _etext = . ; + } > dram + .data : + { + *(.data) + _edata = . ; + } > dram + .bss : + { + *(.bss) + _end = ALIGN( 0x10 ) ; + } > dram +} diff --git a/kernel/arch/cris/boot/compressed/head_v10.S b/kernel/arch/cris/boot/compressed/head_v10.S new file mode 100644 index 000000000..9edb8ade7 --- /dev/null +++ b/kernel/arch/cris/boot/compressed/head_v10.S @@ -0,0 +1,126 @@ +/* + * arch/cris/boot/compressed/head.S + * + * Copyright (C) 1999, 2001 Axis Communications AB + * + * Code that sets up the DRAM registers, calls the + * decompressor to unpack the piggybacked kernel, and jumps. + * + */ + +#define ASSEMBLER_MACROS_ONLY +#include <arch/sv_addr_ag.h> + +#define RAM_INIT_MAGIC 0x56902387 +#define COMMAND_LINE_MAGIC 0x87109563 + + ;; Exported symbols + + .globl input_data + + + .text + + nop + di + +;; We need to initialze DRAM registers before we start using the DRAM + + cmp.d RAM_INIT_MAGIC, $r8 ; Already initialized? + beq dram_init_finished + nop + +#include "../../arch-v10/lib/dram_init.S" + +dram_init_finished: + + ;; Initiate the PA and PB ports + + move.b CONFIG_ETRAX_DEF_R_PORT_PA_DATA, $r0 + move.b $r0, [R_PORT_PA_DATA] + + move.b CONFIG_ETRAX_DEF_R_PORT_PA_DIR, $r0 + move.b $r0, [R_PORT_PA_DIR] + + move.b CONFIG_ETRAX_DEF_R_PORT_PB_DATA, $r0 + move.b $r0, [R_PORT_PB_DATA] + + move.b CONFIG_ETRAX_DEF_R_PORT_PB_DIR, $r0 + move.b $r0, [R_PORT_PB_DIR] + + ;; Setup the stack to a suitably high address. + ;; We assume 8 MB is the minimum DRAM in an eLinux + ;; product and put the sp at the top for now. + + move.d 0x40800000, $sp + + ;; Figure out where the compressed piggyback image is + ;; in the flash (since we wont try to copy it to DRAM + ;; before unpacking). It is at _edata, but in flash. + ;; Use (_edata - basse) as offset to the current PC. + +basse: move.d $pc, $r5 + and.d 0x7fffffff, $r5 ; strip any non-cache bit + subq 2, $r5 ; compensate for the move.d $pc instr + move.d $r5, $r0 ; save for later - flash address of 'basse' + add.d _edata, $r5 + sub.d basse, $r5 ; $r5 = flash address of '_edata' + + ;; Copy text+data to DRAM + + move.d basse, $r1 ; destination + move.d _edata, $r2 ; end destination +1: move.w [$r0+], $r3 + move.w $r3, [$r1+] + cmp.d $r2, $r1 + bcs 1b + nop + + move.d $r5, [input_data] ; for the decompressor + + + ;; Clear the decompressors BSS (between _edata and _end) + + moveq 0, $r0 + move.d _edata, $r1 + move.d _end, $r2 +1: move.w $r0, [$r1+] + cmp.d $r2, $r1 + bcs 1b + nop + + ;; Save command line magic and address. + move.d _cmd_line_magic, $r12 + move.d $r10, [$r12] + move.d _cmd_line_addr, $r12 + move.d $r11, [$r12] + + ;; Do the decompression and save compressed size in inptr + + jsr decompress_kernel + + ;; Put start address of root partition in $r9 so the kernel can use it + ;; when mounting from flash + + move.d [input_data], $r9 ; flash address of compressed kernel + add.d [inptr], $r9 ; size of compressed kernel + + ;; Restore command line magic and address. + move.d _cmd_line_magic, $r10 + move.d [$r10], $r10 + move.d _cmd_line_addr, $r11 + move.d [$r11], $r11 + + ;; Enter the decompressed kernel + move.d RAM_INIT_MAGIC, $r8 ; Tell kernel that DRAM is initialized + jump 0x40004000 ; kernel is linked to this address + + .data + +input_data: + .dword 0 ; used by the decompressor +_cmd_line_magic: + .dword 0 +_cmd_line_addr: + .dword 0 +#include "../../arch-v10/lib/hw_settings.S" diff --git a/kernel/arch/cris/boot/compressed/head_v32.S b/kernel/arch/cris/boot/compressed/head_v32.S new file mode 100644 index 000000000..f483005f3 --- /dev/null +++ b/kernel/arch/cris/boot/compressed/head_v32.S @@ -0,0 +1,145 @@ +/* + * Code that sets up the DRAM registers, calls the + * decompressor to unpack the piggybacked kernel, and jumps. + * + * Copyright (C) 1999 - 2006, Axis Communications AB + */ + +#define ASSEMBLER_MACROS_ONLY +#include <hwregs/asm/reg_map_asm.h> +#include <mach/startup.inc> + +#define RAM_INIT_MAGIC 0x56902387 +#define COMMAND_LINE_MAGIC 0x87109563 + + ;; Exported symbols + + .globl input_data + + .text +start: + di + + ;; Start clocks for used blocks. + START_CLOCKS + + ;; Initialize the DRAM registers. + cmp.d RAM_INIT_MAGIC, $r8 ; Already initialized? + beq dram_init_finished + nop + +#if defined CONFIG_ETRAXFS +#include "../../arch-v32/mach-fs/dram_init.S" +#elif defined CONFIG_CRIS_MACH_ARTPEC3 +#include "../../arch-v32/mach-a3/dram_init.S" +#else +#error Only ETRAXFS and ARTPEC-3 supported! +#endif + +dram_init_finished: + + GIO_INIT + ;; Setup the stack to a suitably high address. + ;; We assume 8 MB is the minimum DRAM and put + ;; the SP at the top for now. + + move.d 0x40800000, $sp + + ;; Figure out where the compressed piggyback image is. + ;; It is either in [NOR] flash (we don't want to copy it + ;; to DRAM before unpacking), or copied to DRAM + ;; by the [NAND] flash boot loader. + ;; The piggyback image is at _edata, but relative to where the + ;; image is actually located in memory, not where it is linked + ;; (the decompressor is linked at 0x40700000+ and runs there). + ;; Use (_edata - herami) as offset to the current PC. + +hereami: + lapcq ., $r5 ; get PC + and.d 0x7fffffff, $r5 ; strip any non-cache bit + move.d $r5, $r0 ; source address of 'herami' + add.d _edata, $r5 + sub.d hereami, $r5 ; r5 = flash address of '_edata' + move.d hereami, $r1 ; destination + + ;; Copy text+data to DRAM + + move.d _edata, $r2 ; end destination +1: move.w [$r0+], $r3 ; from herami+ source + move.w $r3, [$r1+] ; to hereami+ destination (linked address) + cmp.d $r2, $r1 ; finish when destination == _edata + bcs 1b + nop + move.d input_data, $r0 ; for the decompressor + move.d $r5, [$r0] ; for the decompressor + + ;; Clear the decompressors BSS (between _edata and _end) + + moveq 0, $r0 + move.d _edata, $r1 + move.d _end, $r2 +1: move.w $r0, [$r1+] + cmp.d $r2, $r1 + bcs 1b + nop + + ;; Save command line magic and address. + move.d _cmd_line_magic, $r0 + move.d $r10, [$r0] + move.d _cmd_line_addr, $r0 + move.d $r11, [$r0] + + ;; Save boot source indicator + move.d _boot_source, $r0 + move.d $r12, [$r0] + + ;; Do the decompression and save compressed size in _inptr + + jsr decompress_kernel + nop + + ;; Restore boot source indicator + move.d _boot_source, $r12 + move.d [$r12], $r12 + + ;; Restore command line magic and address. + move.d _cmd_line_magic, $r10 + move.d [$r10], $r10 + move.d _cmd_line_addr, $r11 + move.d [$r11], $r11 + + ;; Put start address of root partition in r9 so the kernel can use it + ;; when mounting from flash + move.d input_data, $r0 + move.d [$r0], $r9 ; flash address of compressed kernel + move.d inptr, $r0 + add.d [$r0], $r9 ; size of compressed kernel + cmp.d 0x40000000, $r9 ; image in DRAM ? + blo enter_kernel ; no, must be [NOR] flash, jump + nop ; delay slot + and.d 0x001fffff, $r9 ; assume compressed kernel was < 2M + +enter_kernel: + ;; Enter the decompressed kernel + move.d RAM_INIT_MAGIC, $r8 ; Tell kernel that DRAM is initialized + jump 0x40004000 ; kernel is linked to this address + nop + + .data + +input_data: + .dword 0 ; used by the decompressor +_cmd_line_magic: + .dword 0 +_cmd_line_addr: + .dword 0 +_boot_source: + .dword 0 + +#if defined CONFIG_ETRAXFS +#include "../../arch-v32/mach-fs/hw_settings.S" +#elif defined CONFIG_CRIS_MACH_ARTPEC3 +#include "../../arch-v32/mach-a3/hw_settings.S" +#else +#error Only ETRAXFS and ARTPEC-3 supported! +#endif diff --git a/kernel/arch/cris/boot/compressed/misc.c b/kernel/arch/cris/boot/compressed/misc.c new file mode 100644 index 000000000..548d886b0 --- /dev/null +++ b/kernel/arch/cris/boot/compressed/misc.c @@ -0,0 +1,376 @@ +/* + * misc.c + * + * This is a collection of several routines from gzip-1.0.3 + * adapted for Linux. + * + * malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994 + * puts by Nick Holloway 1993, better puts by Martin Mares 1995 + * adaptation for Linux/CRIS Axis Communications AB, 1999 + * + */ + +/* where the piggybacked kernel image expects itself to live. + * it is the same address we use when we network load an uncompressed + * image into DRAM, and it is the address the kernel is linked to live + * at by vmlinux.lds.S + */ + +#define KERNEL_LOAD_ADR 0x40004000 + +#include <linux/types.h> + +#ifdef CONFIG_ETRAX_ARCH_V32 +#include <hwregs/reg_rdwr.h> +#include <hwregs/reg_map.h> +#include <hwregs/ser_defs.h> +#include <hwregs/pinmux_defs.h> +#ifdef CONFIG_CRIS_MACH_ARTPEC3 +#include <hwregs/clkgen_defs.h> +#endif +#else +#include <arch/svinto.h> +#endif + +/* + * gzip declarations + */ + +#define OF(args) args +#define STATIC static + +void *memset(void *s, int c, size_t n); +void *memcpy(void *__dest, __const void *__src, size_t __n); + +#define memzero(s, n) memset((s), 0, (n)) + +typedef unsigned char uch; +typedef unsigned short ush; +typedef unsigned long ulg; + +#define WSIZE 0x8000 /* Window size must be at least 32k, */ + /* and a power of two */ + +static uch *inbuf; /* input buffer */ +static uch window[WSIZE]; /* Sliding window buffer */ + +unsigned inptr = 0; /* index of next byte to be processed in inbuf + * After decompression it will contain the + * compressed size, and head.S will read it. + */ + +static unsigned outcnt = 0; /* bytes in output buffer */ + +/* gzip flag byte */ +#define ASCII_FLAG 0x01 /* bit 0 set: file probably ascii text */ +#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */ +#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */ +#define ORIG_NAME 0x08 /* bit 3 set: original file name present */ +#define COMMENT 0x10 /* bit 4 set: file comment present */ +#define ENCRYPTED 0x20 /* bit 5 set: file is encrypted */ +#define RESERVED 0xC0 /* bit 6,7: reserved */ + +#define get_byte() (inbuf[inptr++]) + +/* Diagnostic functions */ +#ifdef DEBUG +# define Assert(cond, msg) do { \ + if (!(cond)) \ + error(msg); \ + } while (0) +# define Trace(x) fprintf x +# define Tracev(x) do { \ + if (verbose) \ + fprintf x; \ + } while (0) +# define Tracevv(x) do { \ + if (verbose > 1) \ + fprintf x; \ + } while (0) +# define Tracec(c, x) do { \ + if (verbose && (c)) \ + fprintf x; \ + } while (0) +# define Tracecv(c, x) do { \ + if (verbose > 1 && (c)) \ + fprintf x; \ + } while (0) +#else +# define Assert(cond, msg) +# define Trace(x) +# define Tracev(x) +# define Tracevv(x) +# define Tracec(c, x) +# define Tracecv(c, x) +#endif + +static void flush_window(void); +static void error(char *m); +static void aputs(const char *s); + +extern char *input_data; /* lives in head.S */ + +static long bytes_out; +static uch *output_data; +static unsigned long output_ptr; + +/* the "heap" is put directly after the BSS ends, at end */ + +extern int _end; +static long free_mem_ptr = (long)&_end; +static long free_mem_end_ptr; + +#include "../../../../../lib/inflate.c" + +/* decompressor info and error messages to serial console */ + +#ifdef CONFIG_ETRAX_ARCH_V32 +static inline void serout(const char *s, reg_scope_instances regi_ser) +{ + reg_ser_rs_stat_din rs; + reg_ser_rw_dout dout = {.data = *s}; + + do { + rs = REG_RD(ser, regi_ser, rs_stat_din); + } + while (!rs.tr_rdy);/* Wait for transceiver. */ + + REG_WR(ser, regi_ser, rw_dout, dout); +} +#define SEROUT(S, N) \ + do { \ + serout(S, regi_ser ## N); \ + s++; \ + } while (0) +#else +#define SEROUT(S, N) do { \ + while (!(*R_SERIAL ## N ## _STATUS & (1 << 5))) \ + ; \ + *R_SERIAL ## N ## _TR_DATA = *s++; \ + } while (0) +#endif + +static void aputs(const char *s) +{ +#ifndef CONFIG_ETRAX_DEBUG_PORT_NULL + while (*s) { +#ifdef CONFIG_ETRAX_DEBUG_PORT0 + SEROUT(s, 0); +#endif +#ifdef CONFIG_ETRAX_DEBUG_PORT1 + SEROUT(s, 1); +#endif +#ifdef CONFIG_ETRAX_DEBUG_PORT2 + SEROUT(s, 2); +#endif +#ifdef CONFIG_ETRAX_DEBUG_PORT3 + SEROUT(s, 3); +#endif + } +#endif /* CONFIG_ETRAX_DEBUG_PORT_NULL */ +} + +void *memset(void *s, int c, size_t n) +{ + int i; + char *ss = (char*)s; + + for (i=0;i<n;i++) ss[i] = c; + + return s; +} + +void *memcpy(void *__dest, __const void *__src, size_t __n) +{ + int i; + char *d = (char *)__dest, *s = (char *)__src; + + for (i = 0; i < __n; i++) + d[i] = s[i]; + + return __dest; +} + +/* =========================================================================== + * Write the output window window[0..outcnt-1] and update crc and bytes_out. + * (Used for the decompressed data only.) + */ + +static void flush_window(void) +{ + ulg c = crc; /* temporary variable */ + unsigned n; + uch *in, *out, ch; + + in = window; + out = &output_data[output_ptr]; + for (n = 0; n < outcnt; n++) { + ch = *out = *in; + out++; + in++; + c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8); + } + crc = c; + bytes_out += (ulg)outcnt; + output_ptr += (ulg)outcnt; + outcnt = 0; +} + +static void error(char *x) +{ + aputs("\n\n"); + aputs(x); + aputs("\n\n -- System halted\n"); + + while(1); /* Halt */ +} + +void setup_normal_output_buffer(void) +{ + output_data = (char *)KERNEL_LOAD_ADR; +} + +#ifdef CONFIG_ETRAX_ARCH_V32 +static inline void serial_setup(reg_scope_instances regi_ser) +{ + reg_ser_rw_xoff xoff; + reg_ser_rw_tr_ctrl tr_ctrl; + reg_ser_rw_rec_ctrl rec_ctrl; + reg_ser_rw_tr_baud_div tr_baud; + reg_ser_rw_rec_baud_div rec_baud; + + /* Turn off XOFF. */ + xoff = REG_RD(ser, regi_ser, rw_xoff); + + xoff.chr = 0; + xoff.automatic = regk_ser_no; + + REG_WR(ser, regi_ser, rw_xoff, xoff); + + /* Set baudrate and stopbits. */ + tr_ctrl = REG_RD(ser, regi_ser, rw_tr_ctrl); + rec_ctrl = REG_RD(ser, regi_ser, rw_rec_ctrl); + tr_baud = REG_RD(ser, regi_ser, rw_tr_baud_div); + rec_baud = REG_RD(ser, regi_ser, rw_rec_baud_div); + + tr_ctrl.stop_bits = 1; /* 2 stop bits. */ + tr_ctrl.en = 1; /* enable transmitter */ + rec_ctrl.en = 1; /* enabler receiver */ + + /* + * The baudrate setup used to be a bit fishy, but now transmitter and + * receiver are both set to the intended baud rate, 115200. + * The magic value is 29.493 MHz. + */ + tr_ctrl.base_freq = regk_ser_f29_493; + rec_ctrl.base_freq = regk_ser_f29_493; + tr_baud.div = (29493000 / 8) / 115200; + rec_baud.div = (29493000 / 8) / 115200; + + REG_WR(ser, regi_ser, rw_tr_ctrl, tr_ctrl); + REG_WR(ser, regi_ser, rw_tr_baud_div, tr_baud); + REG_WR(ser, regi_ser, rw_rec_ctrl, rec_ctrl); + REG_WR(ser, regi_ser, rw_rec_baud_div, rec_baud); +} +#endif + +void decompress_kernel(void) +{ + char revision; + char compile_rev; + +#ifdef CONFIG_ETRAX_ARCH_V32 + /* Need at least a CRISv32 to run. */ + compile_rev = 32; +#if defined(CONFIG_ETRAX_DEBUG_PORT1) || \ + defined(CONFIG_ETRAX_DEBUG_PORT2) || \ + defined(CONFIG_ETRAX_DEBUG_PORT3) + reg_pinmux_rw_hwprot hwprot; + +#ifdef CONFIG_CRIS_MACH_ARTPEC3 + reg_clkgen_rw_clk_ctrl clk_ctrl; + + /* Enable corresponding clock region when serial 1..3 selected */ + + clk_ctrl = REG_RD(clkgen, regi_clkgen, rw_clk_ctrl); + clk_ctrl.sser_ser_dma6_7 = regk_clkgen_yes; + REG_WR(clkgen, regi_clkgen, rw_clk_ctrl, clk_ctrl); +#endif + + /* pinmux setup for ports 1..3 */ + hwprot = REG_RD(pinmux, regi_pinmux, rw_hwprot); +#endif + + +#ifdef CONFIG_ETRAX_DEBUG_PORT0 + serial_setup(regi_ser0); +#endif +#ifdef CONFIG_ETRAX_DEBUG_PORT1 + hwprot.ser1 = regk_pinmux_yes; + serial_setup(regi_ser1); +#endif +#ifdef CONFIG_ETRAX_DEBUG_PORT2 + hwprot.ser2 = regk_pinmux_yes; + serial_setup(regi_ser2); +#endif +#ifdef CONFIG_ETRAX_DEBUG_PORT3 + hwprot.ser3 = regk_pinmux_yes; + serial_setup(regi_ser3); +#endif +#if defined(CONFIG_ETRAX_DEBUG_PORT1) || \ + defined(CONFIG_ETRAX_DEBUG_PORT2) || \ + defined(CONFIG_ETRAX_DEBUG_PORT3) + REG_WR(pinmux, regi_pinmux, rw_hwprot, hwprot); +#endif + + /* input_data is set in head.S */ + inbuf = input_data; +#else /* CRISv10 */ + /* Need at least a crisv10 to run. */ + compile_rev = 10; + + /* input_data is set in head.S */ + inbuf = input_data; + +#ifdef CONFIG_ETRAX_DEBUG_PORT0 + *R_SERIAL0_XOFF = 0; + *R_SERIAL0_BAUD = 0x99; + *R_SERIAL0_TR_CTRL = 0x40; +#endif +#ifdef CONFIG_ETRAX_DEBUG_PORT1 + *R_SERIAL1_XOFF = 0; + *R_SERIAL1_BAUD = 0x99; + *R_SERIAL1_TR_CTRL = 0x40; +#endif +#ifdef CONFIG_ETRAX_DEBUG_PORT2 + *R_GEN_CONFIG = 0x08; + *R_SERIAL2_XOFF = 0; + *R_SERIAL2_BAUD = 0x99; + *R_SERIAL2_TR_CTRL = 0x40; +#endif +#ifdef CONFIG_ETRAX_DEBUG_PORT3 + *R_GEN_CONFIG = 0x100; + *R_SERIAL3_XOFF = 0; + *R_SERIAL3_BAUD = 0x99; + *R_SERIAL3_TR_CTRL = 0x40; +#endif +#endif + + setup_normal_output_buffer(); + + makecrc(); + + __asm__ volatile ("move $vr,%0" : "=rm" (revision)); + if (revision < compile_rev) { +#ifdef CONFIG_ETRAX_ARCH_V32 + aputs("You need at least ETRAX FS to run Linux 2.6/crisv32\n"); +#else + aputs("You need an ETRAX 100LX to run linux 2.6/crisv10\n"); +#endif + while(1); + } + + aputs("Uncompressing Linux...\n"); + gunzip(); + aputs("Done. Now booting the kernel\n"); +} |