8ea0de4b88
To be able to relocate the .bss section at run time independently from the rest of the code, we must make sure that no GOTOFF relocations are used with .bss symbols. This usually means that no global variables can be marked static unless they're also const. Let's remove the static qualifier from current offenders, or turn them into const variables when possible. Next commit will ensure the build fails if one of those is reintroduced due to otherwise enforced coding standards for the kernel. Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org> Tested-by: Tony Lindgren <tony@atomide.com>
196 lines
4.3 KiB
C
196 lines
4.3 KiB
C
/*
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* arch/arm/mach-rpc/include/mach/uncompress.h
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*
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* Copyright (C) 1996 Russell King
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#define VIDMEM ((char *)SCREEN_START)
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#include <linux/io.h>
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#include <mach/hardware.h>
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#include <asm/setup.h>
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#include <asm/page.h>
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int video_size_row;
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unsigned char bytes_per_char_h;
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extern unsigned long con_charconvtable[256];
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struct param_struct {
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unsigned long page_size;
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unsigned long nr_pages;
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unsigned long ramdisk_size;
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unsigned long mountrootrdonly;
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unsigned long rootdev;
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unsigned long video_num_cols;
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unsigned long video_num_rows;
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unsigned long video_x;
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unsigned long video_y;
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unsigned long memc_control_reg;
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unsigned char sounddefault;
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unsigned char adfsdrives;
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unsigned char bytes_per_char_h;
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unsigned char bytes_per_char_v;
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unsigned long unused[256/4-11];
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};
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static const unsigned long palette_4[16] = {
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0x00000000,
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0x000000cc,
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0x0000cc00, /* Green */
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0x0000cccc, /* Yellow */
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0x00cc0000, /* Blue */
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0x00cc00cc, /* Magenta */
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0x00cccc00, /* Cyan */
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0x00cccccc, /* White */
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0x00000000,
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0x000000ff,
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0x0000ff00,
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0x0000ffff,
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0x00ff0000,
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0x00ff00ff,
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0x00ffff00,
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0x00ffffff
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};
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#define palette_setpixel(p) *(unsigned long *)(IO_START+0x00400000) = 0x10000000|((p) & 255)
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#define palette_write(v) *(unsigned long *)(IO_START+0x00400000) = 0x00000000|((v) & 0x00ffffff)
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/*
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* params_phys is a linker defined symbol - see
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* arch/arm/boot/compressed/Makefile
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*/
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extern __attribute__((pure)) struct param_struct *params(void);
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#define params (params())
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#ifndef STANDALONE_DEBUG
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unsigned long video_num_cols;
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unsigned long video_num_rows;
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unsigned long video_x;
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unsigned long video_y;
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unsigned char bytes_per_char_v;
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int white;
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/*
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* This does not append a newline
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*/
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static void putc(int c)
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{
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extern void ll_write_char(char *, char c, char white);
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int x,y;
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char *ptr;
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x = video_x;
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y = video_y;
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if (c == '\n') {
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if (++y >= video_num_rows)
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y--;
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} else if (c == '\r') {
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x = 0;
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} else {
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ptr = VIDMEM + ((y*video_num_cols*bytes_per_char_v+x)*bytes_per_char_h);
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ll_write_char(ptr, c, white);
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if (++x >= video_num_cols) {
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x = 0;
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if ( ++y >= video_num_rows ) {
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y--;
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}
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}
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}
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video_x = x;
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video_y = y;
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}
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static inline void flush(void)
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{
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}
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/*
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* Setup for decompression
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*/
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static void arch_decomp_setup(void)
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{
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int i;
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struct tag *t = (struct tag *)params;
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unsigned int nr_pages = 0, page_size = PAGE_SIZE;
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if (t->hdr.tag == ATAG_CORE)
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{
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for (; t->hdr.size; t = tag_next(t))
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{
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if (t->hdr.tag == ATAG_VIDEOTEXT)
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{
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video_num_rows = t->u.videotext.video_lines;
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video_num_cols = t->u.videotext.video_cols;
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bytes_per_char_h = t->u.videotext.video_points;
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bytes_per_char_v = t->u.videotext.video_points;
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video_x = t->u.videotext.x;
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video_y = t->u.videotext.y;
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}
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if (t->hdr.tag == ATAG_MEM)
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{
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page_size = PAGE_SIZE;
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nr_pages += (t->u.mem.size / PAGE_SIZE);
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}
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}
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}
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else
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{
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nr_pages = params->nr_pages;
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page_size = params->page_size;
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video_num_rows = params->video_num_rows;
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video_num_cols = params->video_num_cols;
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video_x = params->video_x;
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video_y = params->video_y;
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bytes_per_char_h = params->bytes_per_char_h;
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bytes_per_char_v = params->bytes_per_char_v;
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}
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video_size_row = video_num_cols * bytes_per_char_h;
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if (bytes_per_char_h == 4)
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for (i = 0; i < 256; i++)
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con_charconvtable[i] =
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(i & 128 ? 1 << 0 : 0) |
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(i & 64 ? 1 << 4 : 0) |
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(i & 32 ? 1 << 8 : 0) |
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(i & 16 ? 1 << 12 : 0) |
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(i & 8 ? 1 << 16 : 0) |
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(i & 4 ? 1 << 20 : 0) |
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(i & 2 ? 1 << 24 : 0) |
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(i & 1 ? 1 << 28 : 0);
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else
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for (i = 0; i < 16; i++)
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con_charconvtable[i] =
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(i & 8 ? 1 << 0 : 0) |
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(i & 4 ? 1 << 8 : 0) |
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(i & 2 ? 1 << 16 : 0) |
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(i & 1 ? 1 << 24 : 0);
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palette_setpixel(0);
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if (bytes_per_char_h == 1) {
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palette_write (0);
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palette_write (0x00ffffff);
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for (i = 2; i < 256; i++)
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palette_write (0);
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white = 1;
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} else {
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for (i = 0; i < 256; i++)
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palette_write (i < 16 ? palette_4[i] : 0);
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white = 7;
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}
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if (nr_pages * page_size < 4096*1024) error("<4M of mem\n");
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}
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#endif
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/*
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* nothing to do
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*/
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#define arch_decomp_wdog()
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