[mirror_ubuntu-focal-kernel.git] / include / asm-arm / arch-rpc / uncompress.h

/*
 *  linux/include/asm-arm/arch-rpc/uncompress.h
 *
 *  Copyright (C) 1996 Russell King
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#define VIDMEM ((char *)SCREEN_START)
 
#include <asm/arch/hardware.h>
#include <asm/io.h>
#include <asm/setup.h>
#include <asm/page.h>

int video_size_row;
unsigned char bytes_per_char_h;
extern unsigned long con_charconvtable[256];

struct param_struct {
	unsigned long page_size;
	unsigned long nr_pages;
	unsigned long ramdisk_size;
	unsigned long mountrootrdonly;
	unsigned long rootdev;
	unsigned long video_num_cols;
	unsigned long video_num_rows;
	unsigned long video_x;
	unsigned long video_y;
	unsigned long memc_control_reg;
	unsigned char sounddefault;
	unsigned char adfsdrives;
	unsigned char bytes_per_char_h;
	unsigned char bytes_per_char_v;
	unsigned long unused[256/4-11];
};

static const unsigned long palette_4[16] = {
	0x00000000,
	0x000000cc,
	0x0000cc00,             /* Green   */
	0x0000cccc,             /* Yellow  */
	0x00cc0000,             /* Blue    */
	0x00cc00cc,             /* Magenta */
	0x00cccc00,             /* Cyan    */
	0x00cccccc,             /* White   */
	0x00000000,
	0x000000ff,
	0x0000ff00,
	0x0000ffff,
	0x00ff0000,
	0x00ff00ff,
	0x00ffff00,
	0x00ffffff
};

#define palette_setpixel(p)	*(unsigned long *)(IO_START+0x00400000) = 0x10000000|((p) & 255)
#define palette_write(v)	*(unsigned long *)(IO_START+0x00400000) = 0x00000000|((v) & 0x00ffffff)

/*
 * params_phys is a linker defined symbol - see
 * arch/arm/boot/compressed/Makefile
 */
extern __attribute__((pure)) struct param_struct *params(void);
#define params (params())

#ifndef STANDALONE_DEBUG 
static unsigned long video_num_cols;
static unsigned long video_num_rows;
static unsigned long video_x;
static unsigned long video_y;
static unsigned char bytes_per_char_v;
static int white;

/*
 * This does not append a newline
 */
static void putc(int c)
{
	extern void ll_write_char(char *, char c, char white);
	int x,y;
	char *ptr;

	x = video_x;
	y = video_y;

	if (c == '\n') {
		if (++y >= video_num_rows)
			y--;
	} else if (c == '\r') {
		x = 0;
	} else {
		ptr = VIDMEM + ((y*video_num_cols*bytes_per_char_v+x)*bytes_per_char_h);
		ll_write_char(ptr, c, white);
		if (++x >= video_num_cols) {
			x = 0;
			if ( ++y >= video_num_rows ) {
				y--;
			}
		}
	}

	video_x = x;
	video_y = y;
}

static inline void flush(void)
{
}

static void error(char *x);

/*
 * Setup for decompression
 */
static void arch_decomp_setup(void)
{
	int i;
	struct tag *t = (struct tag *)params;
	unsigned int nr_pages = 0, page_size = PAGE_SIZE;

	if (t->hdr.tag == ATAG_CORE)
	{
		for (; t->hdr.size; t = tag_next(t))
		{
			if (t->hdr.tag == ATAG_VIDEOTEXT)
			{
				video_num_rows = t->u.videotext.video_lines;
				video_num_cols = t->u.videotext.video_cols;
				bytes_per_char_h = t->u.videotext.video_points;
				bytes_per_char_v = t->u.videotext.video_points;
				video_x = t->u.videotext.x;
				video_y = t->u.videotext.y;
			}

			if (t->hdr.tag == ATAG_MEM)
			{
				page_size = PAGE_SIZE;
				nr_pages += (t->u.mem.size / PAGE_SIZE);
			}
		}
	}
	else
	{
		nr_pages = params->nr_pages;
		page_size = params->page_size;
		video_num_rows = params->video_num_rows;
		video_num_cols = params->video_num_cols;
		video_x = params->video_x;
		video_y = params->video_y;
		bytes_per_char_h = params->bytes_per_char_h;
		bytes_per_char_v = params->bytes_per_char_v;
	}

	video_size_row = video_num_cols * bytes_per_char_h;
	
	if (bytes_per_char_h == 4)
		for (i = 0; i < 256; i++)
			con_charconvtable[i] =
				(i & 128 ? 1 << 0  : 0) |
				(i & 64  ? 1 << 4  : 0) |
				(i & 32  ? 1 << 8  : 0) |
				(i & 16  ? 1 << 12 : 0) |
				(i & 8   ? 1 << 16 : 0) |
				(i & 4   ? 1 << 20 : 0) |
				(i & 2   ? 1 << 24 : 0) |
				(i & 1   ? 1 << 28 : 0);
	else
		for (i = 0; i < 16; i++)
			con_charconvtable[i] =
				(i & 8   ? 1 << 0  : 0) |
				(i & 4   ? 1 << 8  : 0) |
				(i & 2   ? 1 << 16 : 0) |
				(i & 1   ? 1 << 24 : 0);


	palette_setpixel(0);
	if (bytes_per_char_h == 1) {
		palette_write (0);
		palette_write (0x00ffffff);
		for (i = 2; i < 256; i++)
			palette_write (0);
		white = 1;
	} else {
		for (i = 0; i < 256; i++)
			palette_write (i < 16 ? palette_4[i] : 0);
		white = 7;
	}

	if (nr_pages * page_size < 4096*1024) error("<4M of mem\n");
}
#endif

/*
 * nothing to do
 */
#define arch_decomp_wdog()
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/include/asm-arm/arch-rpc/uncompress.h
	3	*
	4	* Copyright (C) 1996 Russell King
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*/
	10	#define VIDMEM ((char *)SCREEN_START)
	11
be509729	12	#include <asm/arch/hardware.h>
1da177e4	13	#include <asm/io.h>
e16edefe AH	14	#include <asm/setup.h>
e16edefe AH	15	#include <asm/page.h>
1da177e4	16
e16edefe AH	17	int video_size_row;
e16edefe AH	18	unsigned char bytes_per_char_h;
1da177e4 LT	19	extern unsigned long con_charconvtable[256];
	20
	21	struct param_struct {
	22	unsigned long page_size;
	23	unsigned long nr_pages;
	24	unsigned long ramdisk_size;
	25	unsigned long mountrootrdonly;
	26	unsigned long rootdev;
	27	unsigned long video_num_cols;
	28	unsigned long video_num_rows;
	29	unsigned long video_x;
	30	unsigned long video_y;
	31	unsigned long memc_control_reg;
	32	unsigned char sounddefault;
	33	unsigned char adfsdrives;
	34	unsigned char bytes_per_char_h;
	35	unsigned char bytes_per_char_v;
	36	unsigned long unused[256/4-11];
	37	};
	38
	39	static const unsigned long palette_4[16] = {
	40	0x00000000,
	41	0x000000cc,
	42	0x0000cc00, /* Green */
	43	0x0000cccc, /* Yellow */
	44	0x00cc0000, /* Blue */
	45	0x00cc00cc, /* Magenta */
	46	0x00cccc00, /* Cyan */
	47	0x00cccccc, /* White */
	48	0x00000000,
	49	0x000000ff,
	50	0x0000ff00,
	51	0x0000ffff,
	52	0x00ff0000,
	53	0x00ff00ff,
	54	0x00ffff00,
	55	0x00ffffff
	56	};
	57
	58	#define palette_setpixel(p) (unsigned long )(IO_START+0x00400000) = 0x10000000\|((p) & 255)
	59	#define palette_write(v) (unsigned long )(IO_START+0x00400000) = 0x00000000\|((v) & 0x00ffffff)
	60
	61	/*
	62	* params_phys is a linker defined symbol - see
	63	* arch/arm/boot/compressed/Makefile
	64	*/
	65	extern __attribute__((pure)) struct param_struct *params(void);
	66	#define params (params())
	67
	68	#ifndef STANDALONE_DEBUG
e16edefe AH	69	static unsigned long video_num_cols;
	70	static unsigned long video_num_rows;
	71	static unsigned long video_x;
	72	static unsigned long video_y;
	73	static unsigned char bytes_per_char_v;
	74	static int white;
	75
1da177e4 LT	76	/*
	77	* This does not append a newline
	78	*/
a081568d	79	static void putc(int c)
1da177e4 LT	80	{
	81	extern void ll_write_char(char *, char c, char white);
	82	int x,y;
1da177e4 LT	83	char *ptr;
1da177e4 LT	84
e16edefe AH	85	x = video_x;
e16edefe AH	86	y = video_y;
1da177e4	87
a081568d	88	if (c == '\n') {
e16edefe	89	if (++y >= video_num_rows)
a081568d RK	90	y--;
	91	} else if (c == '\r') {
	92	x = 0;
	93	} else {
e16edefe	94	ptr = VIDMEM + ((yvideo_num_colsbytes_per_char_v+x)*bytes_per_char_h);
a081568d	95	ll_write_char(ptr, c, white);
e16edefe	96	if (++x >= video_num_cols) {
1da177e4	97	x = 0;
e16edefe	98	if ( ++y >= video_num_rows ) {
1da177e4 LT	99	y--;
1da177e4 LT	100	}
1da177e4 LT	101	}
	102	}
	103
e16edefe AH	104	video_x = x;
e16edefe AH	105	video_y = y;
1da177e4 LT	106	}
1da177e4 LT	107
a081568d RK	108	static inline void flush(void)
	109	{
	110	}
	111
1da177e4 LT	112	static void error(char *x);
	113
	114	/*
	115	* Setup for decompression
	116	*/
	117	static void arch_decomp_setup(void)
	118	{
	119	int i;
e16edefe AH	120	struct tag t = (struct tag )params;
	121	unsigned int nr_pages = 0, page_size = PAGE_SIZE;
	122
	123	if (t->hdr.tag == ATAG_CORE)
	124	{
	125	for (; t->hdr.size; t = tag_next(t))
	126	{
	127	if (t->hdr.tag == ATAG_VIDEOTEXT)
	128	{
	129	video_num_rows = t->u.videotext.video_lines;
	130	video_num_cols = t->u.videotext.video_cols;
	131	bytes_per_char_h = t->u.videotext.video_points;
	132	bytes_per_char_v = t->u.videotext.video_points;
	133	video_x = t->u.videotext.x;
	134	video_y = t->u.videotext.y;
	135	}
	136
	137	if (t->hdr.tag == ATAG_MEM)
	138	{
	139	page_size = PAGE_SIZE;
	140	nr_pages += (t->u.mem.size / PAGE_SIZE);
	141	}
	142	}
	143	}
	144	else
	145	{
	146	nr_pages = params->nr_pages;
	147	page_size = params->page_size;
	148	video_num_rows = params->video_num_rows;
	149	video_num_cols = params->video_num_cols;
	150	video_x = params->video_x;
	151	video_y = params->video_y;
	152	bytes_per_char_h = params->bytes_per_char_h;
	153	bytes_per_char_v = params->bytes_per_char_v;
	154	}
	155
	156	video_size_row = video_num_cols * bytes_per_char_h;
1da177e4	157
1da177e4 LT	158	if (bytes_per_char_h == 4)
	159	for (i = 0; i < 256; i++)
	160	con_charconvtable[i] =
	161	(i & 128 ? 1 << 0 : 0) \|
	162	(i & 64 ? 1 << 4 : 0) \|
	163	(i & 32 ? 1 << 8 : 0) \|
	164	(i & 16 ? 1 << 12 : 0) \|
	165	(i & 8 ? 1 << 16 : 0) \|
	166	(i & 4 ? 1 << 20 : 0) \|
	167	(i & 2 ? 1 << 24 : 0) \|
	168	(i & 1 ? 1 << 28 : 0);
	169	else
	170	for (i = 0; i < 16; i++)
	171	con_charconvtable[i] =
	172	(i & 8 ? 1 << 0 : 0) \|
	173	(i & 4 ? 1 << 8 : 0) \|
	174	(i & 2 ? 1 << 16 : 0) \|
	175	(i & 1 ? 1 << 24 : 0);
	176
	177
	178	palette_setpixel(0);
	179	if (bytes_per_char_h == 1) {
	180	palette_write (0);
	181	palette_write (0x00ffffff);
	182	for (i = 2; i < 256; i++)
	183	palette_write (0);
	184	white = 1;
	185	} else {
	186	for (i = 0; i < 256; i++)
	187	palette_write (i < 16 ? palette_4[i] : 0);
	188	white = 7;
	189	}
	190
e16edefe	191	if (nr_pages * page_size < 4096*1024) error("<4M of mem\n");
1da177e4 LT	192	}
	193	#endif
	194
	195	/*
	196	* nothing to do
	197	*/
	198	#define arch_decomp_wdog()