aboutsummaryrefslogtreecommitdiffstats
path: root/arch/mn10300/boot/compressed/misc.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mn10300/boot/compressed/misc.c')
-rw-r--r--arch/mn10300/boot/compressed/misc.c393
1 files changed, 0 insertions, 393 deletions
diff --git a/arch/mn10300/boot/compressed/misc.c b/arch/mn10300/boot/compressed/misc.c
deleted file mode 100644
index 42cbd77bd439..000000000000
--- a/arch/mn10300/boot/compressed/misc.c
+++ /dev/null
@@ -1,393 +0,0 @@
-/* MN10300 Miscellaneous helper routines for kernel decompressor
- *
- * Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd.
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
- * Modified by David Howells (dhowells@redhat.com)
- * - Derived from arch/x86/boot/compressed/misc_32.c
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-#include <linux/compiler.h>
-#include <asm/serial-regs.h>
-#include "misc.h"
-
-#ifndef CONFIG_GDBSTUB_ON_TTYSx
-/* display 'Uncompressing Linux... ' messages on ttyS0 or ttyS1 */
-#if 1 /* ttyS0 */
-#define CYG_DEV_BASE 0xA6FB0000
-#else /* ttyS1 */
-#define CYG_DEV_BASE 0xA6FC0000
-#endif
-
-#define CYG_DEV_THR (*((volatile __u8*)(CYG_DEV_BASE + 0x00)))
-#define CYG_DEV_MCR (*((volatile __u8*)(CYG_DEV_BASE + 0x10)))
-#define SIO_MCR_DTR 0x01
-#define SIO_MCR_RTS 0x02
-#define CYG_DEV_LSR (*((volatile __u8*)(CYG_DEV_BASE + 0x14)))
-#define SIO_LSR_THRE 0x20 /* transmitter holding register empty */
-#define SIO_LSR_TEMT 0x40 /* transmitter register empty */
-#define CYG_DEV_MSR (*((volatile __u8*)(CYG_DEV_BASE + 0x18)))
-#define SIO_MSR_CTS 0x10 /* clear to send */
-#define SIO_MSR_DSR 0x20 /* data set ready */
-
-#define LSR_WAIT_FOR(STATE) \
- do { while (!(CYG_DEV_LSR & SIO_LSR_##STATE)) {} } while (0)
-#define FLOWCTL_QUERY(LINE) \
- ({ CYG_DEV_MSR & SIO_MSR_##LINE; })
-#define FLOWCTL_WAIT_FOR(LINE) \
- do { while (!(CYG_DEV_MSR & SIO_MSR_##LINE)) {} } while (0)
-#define FLOWCTL_CLEAR(LINE) \
- do { CYG_DEV_MCR &= ~SIO_MCR_##LINE; } while (0)
-#define FLOWCTL_SET(LINE) \
- do { CYG_DEV_MCR |= SIO_MCR_##LINE; } while (0)
-#endif
-
-/*
- * gzip declarations
- */
-
-#define OF(args) args
-#define STATIC static
-
-#undef memset
-#undef memcpy
-
-static inline void *memset(const void *s, int c, size_t n)
-{
- int i;
- char *ss = (char *) s;
-
- for (i = 0; i < n; i++)
- ss[i] = c;
- return (void *)s;
-}
-
-#define memzero(s, n) memset((s), 0, (n))
-
-static inline void *memcpy(void *__dest, const void *__src, size_t __n)
-{
- int i;
- const char *s = __src;
- char *d = __dest;
-
- for (i = 0; i < __n; i++)
- d[i] = s[i];
- return __dest;
-}
-
-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 */
-
-static unsigned insize; /* valid bytes in inbuf */
-static unsigned inptr; /* index of next byte to be processed in inbuf */
-static unsigned outcnt; /* 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 */
-
-/* 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 int fill_inbuf(void);
-static void flush_window(void);
-static void error(const char *) __attribute__((noreturn));
-static void kputs(const char *);
-
-static inline unsigned char get_byte(void)
-{
- unsigned char ch = inptr < insize ? inbuf[inptr++] : fill_inbuf();
-
-#if 0
- char hex[3];
- hex[0] = ((ch & 0x0f) > 9) ?
- ((ch & 0x0f) + 'A' - 0xa) : ((ch & 0x0f) + '0');
- hex[1] = ((ch >> 4) > 9) ?
- ((ch >> 4) + 'A' - 0xa) : ((ch >> 4) + '0');
- hex[2] = 0;
- kputs(hex);
-#endif
- return ch;
-}
-
-/*
- * This is set up by the setup-routine at boot-time
- */
-#define EXT_MEM_K (*(unsigned short *)0x90002)
-#ifndef STANDARD_MEMORY_BIOS_CALL
-#define ALT_MEM_K (*(unsigned long *) 0x901e0)
-#endif
-#define SCREEN_INFO (*(struct screen_info *)0x90000)
-
-static long bytes_out;
-static uch *output_data;
-static unsigned long output_ptr;
-
-
-static unsigned long free_mem_ptr = (unsigned long) &end;
-static unsigned long free_mem_end_ptr = (unsigned long) &end + 0x90000;
-
-#define INPLACE_MOVE_ROUTINE 0x1000
-#define LOW_BUFFER_START 0x2000
-#define LOW_BUFFER_END 0x90000
-#define LOW_BUFFER_SIZE (LOW_BUFFER_END - LOW_BUFFER_START)
-#define HEAP_SIZE 0x3000
-static int high_loaded;
-static uch *high_buffer_start /* = (uch *)(((ulg)&end) + HEAP_SIZE)*/;
-
-static char *vidmem = (char *)0xb8000;
-static int lines, cols;
-
-#define BOOTLOADER_INFLATE
-#include "../../../../lib/inflate.c"
-
-static inline void scroll(void)
-{
- int i;
-
- memcpy(vidmem, vidmem + cols * 2, (lines - 1) * cols * 2);
- for (i = (lines - 1) * cols * 2; i < lines * cols * 2; i += 2)
- vidmem[i] = ' ';
-}
-
-static inline void kputchar(unsigned char ch)
-{
-#ifdef CONFIG_MN10300_UNIT_ASB2305
- while (SC0STR & SC01STR_TBF)
- continue;
-
- if (ch == 0x0a) {
- SC0TXB = 0x0d;
- while (SC0STR & SC01STR_TBF)
- continue;
- }
-
- SC0TXB = ch;
-
-#else
- while (SC1STR & SC01STR_TBF)
- continue;
-
- if (ch == 0x0a) {
- SC1TXB = 0x0d;
- while (SC1STR & SC01STR_TBF)
- continue;
- }
-
- SC1TXB = ch;
-
-#endif
-}
-
-static void kputs(const char *s)
-{
-#ifdef CONFIG_DEBUG_DECOMPRESS_KERNEL
-#ifndef CONFIG_GDBSTUB_ON_TTYSx
- char ch;
-
- FLOWCTL_SET(DTR);
-
- while (*s) {
- LSR_WAIT_FOR(THRE);
-
- ch = *s++;
- if (ch == 0x0a) {
- CYG_DEV_THR = 0x0d;
- LSR_WAIT_FOR(THRE);
- }
- CYG_DEV_THR = ch;
- }
-
- FLOWCTL_CLEAR(DTR);
-#else
-
- for (; *s; s++)
- kputchar(*s);
-
-#endif
-#endif /* CONFIG_DEBUG_DECOMPRESS_KERNEL */
-}
-
-/* ===========================================================================
- * Fill the input buffer. This is called only when the buffer is empty
- * and at least one byte is really needed.
- */
-static int fill_inbuf()
-{
- if (insize != 0)
- error("ran out of input data\n");
-
- inbuf = input_data;
- insize = input_len;
- inptr = 1;
- return inbuf[0];
-}
-
-/* ===========================================================================
- * Write the output window window[0..outcnt-1] and update crc and bytes_out.
- * (Used for the decompressed data only.)
- */
-static void flush_window_low(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++;
- c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8);
- }
- crc = c;
- bytes_out += (ulg)outcnt;
- output_ptr += (ulg)outcnt;
- outcnt = 0;
-}
-
-static void flush_window_high(void)
-{
- ulg c = crc; /* temporary variable */
- unsigned n;
- uch *in, ch;
- in = window;
- for (n = 0; n < outcnt; n++) {
- ch = *output_data++ = *in++;
- if ((ulg) output_data == LOW_BUFFER_END)
- output_data = high_buffer_start;
- c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8);
- }
- crc = c;
- bytes_out += (ulg)outcnt;
- outcnt = 0;
-}
-
-static void flush_window(void)
-{
- if (high_loaded)
- flush_window_high();
- else
- flush_window_low();
-}
-
-static void error(const char *x)
-{
- kputs("\n\n");
- kputs(x);
- kputs("\n\n -- System halted");
-
- while (1)
- /* Halt */;
-}
-
-#define STACK_SIZE (4096)
-
-long user_stack[STACK_SIZE];
-
-struct {
- long *a;
- short b;
-} stack_start = { &user_stack[STACK_SIZE], 0 };
-
-void setup_normal_output_buffer(void)
-{
-#ifdef STANDARD_MEMORY_BIOS_CALL
- if (EXT_MEM_K < 1024)
- error("Less than 2MB of memory.\n");
-#else
- if ((ALT_MEM_K > EXT_MEM_K ? ALT_MEM_K : EXT_MEM_K) < 1024)
- error("Less than 2MB of memory.\n");
-#endif
- output_data = (char *) 0x100000; /* Points to 1M */
-}
-
-struct moveparams {
- uch *low_buffer_start;
- int lcount;
- uch *high_buffer_start;
- int hcount;
-};
-
-void setup_output_buffer_if_we_run_high(struct moveparams *mv)
-{
- high_buffer_start = (uch *)(((ulg) &end) + HEAP_SIZE);
-#ifdef STANDARD_MEMORY_BIOS_CALL
- if (EXT_MEM_K < (3 * 1024))
- error("Less than 4MB of memory.\n");
-#else
- if ((ALT_MEM_K > EXT_MEM_K ? ALT_MEM_K : EXT_MEM_K) < (3 * 1024))
- error("Less than 4MB of memory.\n");
-#endif
- mv->low_buffer_start = output_data = (char *) LOW_BUFFER_START;
- high_loaded = 1;
- free_mem_end_ptr = (long) high_buffer_start;
- if (0x100000 + LOW_BUFFER_SIZE > (ulg) high_buffer_start) {
- high_buffer_start = (uch *)(0x100000 + LOW_BUFFER_SIZE);
- mv->hcount = 0; /* say: we need not to move high_buffer */
- } else {
- mv->hcount = -1;
- }
- mv->high_buffer_start = high_buffer_start;
-}
-
-void close_output_buffer_if_we_run_high(struct moveparams *mv)
-{
- mv->lcount = bytes_out;
- if (bytes_out > LOW_BUFFER_SIZE) {
- mv->lcount = LOW_BUFFER_SIZE;
- if (mv->hcount)
- mv->hcount = bytes_out - LOW_BUFFER_SIZE;
- } else {
- mv->hcount = 0;
- }
-}
-
-#undef DEBUGFLAG
-#ifdef DEBUGFLAG
-int debugflag;
-#endif
-
-int decompress_kernel(struct moveparams *mv)
-{
-#ifdef DEBUGFLAG
- while (!debugflag)
- barrier();
-#endif
-
- output_data = (char *) CONFIG_KERNEL_TEXT_ADDRESS;
-
- makecrc();
- kputs("Uncompressing Linux... ");
- gunzip();
- kputs("Ok, booting the kernel.\n");
- return 0;
-}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.