diff options
Diffstat (limited to 'arch/cris/arch-v32/boot/compressed/misc.c')
| -rw-r--r-- | arch/cris/arch-v32/boot/compressed/misc.c | 318 |
1 files changed, 0 insertions, 318 deletions
diff --git a/arch/cris/arch-v32/boot/compressed/misc.c b/arch/cris/arch-v32/boot/compressed/misc.c deleted file mode 100644 index 3595e16..0000000 --- a/arch/cris/arch-v32/boot/compressed/misc.c +++ /dev/null @@ -1,318 +0,0 @@ -/* - * 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> -#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 - -/* - * 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) {if(!(cond)) error(msg);} -# define Trace(x) fprintf x -# define Tracev(x) {if (verbose) fprintf x ;} -# define Tracevv(x) {if (verbose>1) fprintf x ;} -# define Tracec(c,x) {if (verbose && (c)) fprintf x ;} -# define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;} -#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); - -extern char *input_data; /* lives in head.S */ - -static long bytes_out; -static uch *output_data; -static unsigned long output_ptr; - -static void error(char *m); - -static void puts(const char *); - -/* 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 */ - -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); -} - -static void -puts(const char *s) -{ -#ifndef CONFIG_ETRAX_DEBUG_PORT_NULL - while (*s) { -#ifdef CONFIG_ETRAX_DEBUG_PORT0 - serout(s, regi_ser0); -#endif -#ifdef CONFIG_ETRAX_DEBUG_PORT1 - serout(s, regi_ser1); -#endif -#ifdef CONFIG_ETRAX_DEBUG_PORT2 - serout(s, regi_ser2); -#endif -#ifdef CONFIG_ETRAX_DEBUG_PORT3 - serout(s, regi_ser3); -#endif - *s++; - } -/* CONFIG_ETRAX_DEBUG_PORT_NULL */ -#endif -} - -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() -{ - 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++; - 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) -{ - puts("\r\n\n"); - puts(x); - puts("\r\n\n -- System halted\n"); - - while(1); /* Halt */ -} - -void -setup_normal_output_buffer(void) -{ - output_data = (char *)KERNEL_LOAD_ADR; -} - -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); -} - -void -decompress_kernel(void) -{ - char revision; - -#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; - - setup_normal_output_buffer(); - - makecrc(); - - __asm__ volatile ("move $vr,%0" : "=rm" (revision)); - if (revision < 32) - { - puts("You need an ETRAX FS to run Linux 2.6/crisv32.\r\n"); - while(1); - } - - puts("Uncompressing Linux...\r\n"); - gunzip(); - puts("Done. Now booting the kernel.\r\n"); -} |