Joshua Wise's Git repositories - netwatch.git/blame_incremental

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Commit	Line	Data
	1	#include <io.h>
	2	#include <smram.h>
	3	#include <video_defines.h>
	4	#include <minilib.h>
	5	#include <stdarg.h>
	6	#include <output.h>
	7	#include <serial.h>
	8
	9	#define LOGLEN 96
	10	#define LOG_ONSCREEN 4
	11
	12	static char logents[LOGLEN][41] = {{0}};
	13	static int prodptr = 0;
	14	static int flush_imm = 0;
	15
	16	#define VRAM_BASE 0xA0000UL
	17	#define TEXT_CONSOLE_OFFSET 0x18000UL
	18
	19	#define TEXT_CONSOLE_BASE (VRAM_BASE + TEXT_CONSOLE_OFFSET)
	20
	21	#define COLOR 0x1F
	22
	23	void vga_flush_imm(int imm)
	24	{
	25	flush_imm = imm;
	26	}
	27
	28	static unsigned char vga_read(unsigned char idx)
	29	{
	30	outb(CRTC_IDX_REG, idx);
	31	return inb(CRTC_DATA_REG);
	32	}
	33
	34	static char * vga_base()
	35	{
	36	return (char *) (
	37	TEXT_CONSOLE_BASE
	38	+ (((unsigned int) vga_read(CRTC_START_ADDR_MSB_IDX)) << 9)
	39	+ (((unsigned int) vga_read(CRTC_START_ADDR_LSB_IDX)) << 1)
	40	);
	41	}
	42
	43	void strblit(char *src, int row, int col)
	44	{
	45	char destp = vga_base() + row 80 * 2 + col * 2;
	46	outb(0x80, 0x3C);
	47	smram_state_t old_state = smram_save_state();
	48	outb(0x80, 0x3D);
	49
	50	smram_aseg_set_state(SMRAM_ASEG_SMMCODE);
	51	outb(0x80, 0x3E);
	52
	53	while (*src)
	54	{
	55	(destp++) = (src++);
	56	*(destp++) = COLOR;
	57	}
	58
	59	outb(0x80, 0x3F);
	60	smram_restore_state(old_state);
	61	outb(0x80, 0x40);
	62	}
	63
	64	void outlog()
	65	{
	66	int y, x;
	67	char *basep = vga_base();
	68
	69	smram_state_t old_state = smram_save_state();
	70
	71	smram_aseg_set_state(SMRAM_ASEG_SMMCODE);
	72
	73	for (y = 0; y < LOG_ONSCREEN; y++)
	74	for (x = 40; x < 80; x++)
	75	{
	76	basep[y802+x*2] = ' ';
	77	basep[y802+x*2+1] = 0x1F;
	78	}
	79
	80	smram_restore_state(old_state);
	81
	82	for (y = -LOG_ONSCREEN; y < 0; y++)
	83	strblit(logents[(y + prodptr) % LOGLEN], y + LOG_ONSCREEN, 40);
	84	}
	85
	86	void dolog(const char *s)
	87	{
	88	strcpy(logents[prodptr], s);
	89	prodptr = (prodptr + 1) % LOGLEN;
	90	while (*s)
	91	serial_tx(*(s++));
	92	serial_tx('\r');
	93	serial_tx('\n');
	94	if (flush_imm)
	95	outlog();
	96	}
	97	void (output)(const char s) = dolog;
	98
	99	void dologf(const char *fmt, ...)
	100	{
	101	char *s;
	102	va_list va;
	103
	104	va_start(va, fmt);
	105	vsnprintf(logents[prodptr], 40, fmt, va);
	106	s = logents[prodptr];
	107	while (*s)
	108	serial_tx(*(s++));
	109	serial_tx('\r');
	110	serial_tx('\n');
	111	va_end(va);
	112	prodptr = (prodptr + 1) % LOGLEN;
	113	if (flush_imm)
	114	outlog();
	115	}
	116	void (outputf)(const char s, ...) = dologf;
	117
	118	void dump_log (char * target) {
	119	memcpy(target, logents, sizeof(logents));
	120	}
	121