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Patch by Martin Krause, 27 Oct 2004:

Browse Source 
- add support for "STK52xx" board (including PS/2 multiplexer)
- add hardware detection for TQM5200
This commit is contained in:
wdenk
2004-12-12 22:06:17 +00:00
parent 25d6712a81
commit 7e6bf358d8
8 changed files with 324 additions and 30 deletions
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3
board/tqm5200/Makefile
View File

@@ -25,7 +25,8 @@ include $(TOPDIR)/config.mk
LIB = lib$(BOARD).a
OBJS := $(BOARD).o flash.o
#OBJS := $(BOARD).o flash.o
OBJS := $(BOARD).o
$(LIB): $(OBJS) $(SOBJS)
$(AR) crv $@ $(OBJS)

126
board/tqm5200/tqm5200.c
View File

@@ -36,6 +36,9 @@
#else
#include "mt48lc16m16a2-75.h"
#endif
#ifdef CONFIG_PS2MULT
void ps2mult_early_init(void);
#endif
#ifndef CFG_RAMBOOT
static void sdram_start (int hi_addr)
@@ -244,13 +247,17 @@ int checkboard (void)
{
#if defined (CONFIG_TQM5200_AA)
puts ("Board: TQM5200-AA (TQ-Systems GmbH)\n");
#endif
#if defined (CONFIG_TQM5200_AB)
#elif defined (CONFIG_TQM5200_AB)
puts ("Board: TQM5200-AB (TQ-Systems GmbH)\n");
#endif
#if defined (CONFIG_TQM5200_AC)
#elif defined (CONFIG_TQM5200_AC)
puts ("Board: TQM5200-AC (TQ-Systems GmbH)\n");
#elif defined (CONFIG_TQM5200)
puts ("Board: TQM5200 (TQ-Systems GmbH)\n");
#endif
#if defined (CONFIG_STK52XX)
puts (" on a STK52XX baseboard\n");
#endif
return 0;
}
@@ -383,5 +390,114 @@ ulong post_word_load (void)
return *save_addr;
}
#endif /* CONFIG_POST || CONFIG_LOGBUFFER*/
#ifdef CONFIG_PS2MULT
#ifdef CONFIG_BOARD_EARLY_INIT_R
int board_early_init_r (void)
{
ps2mult_early_init();
return (0);
}
#endif
#endif /* CONFIG_PS2MULT */
#if defined(CONFIG_CS_AUTOCONF)
int last_stage_init (void)
{
/*
* auto scan for really existing devices and re-set chip select
* configuration.
*/
u16 save, tmp;
int restore;
/*
* Check for SRAM and SRAM size
*/
/* save origianl SRAM content */
save = *(volatile u16 *)CFG_CS2_START;
restore = 1;
/* write test pattern to SRAM */
*(volatile u16 *)CFG_CS2_START = 0xA5A5;
__asm__ volatile ("sync");
/*
* Put a different pattern on the data lines: otherwise they may float
* long enough to read back what we wrote.
*/
tmp = *(volatile u16 *)CFG_FLASH_BASE;
if (tmp == 0xA5A5)
puts ("!! possible error in SRAM detection\n");
if (*(volatile u16 *)CFG_CS2_START != 0xA5A5) {
/* no SRAM at all, disable cs */
*(vu_long *)MPC5XXX_ADDECR &= ~(1 << 18);
*(vu_long *)MPC5XXX_CS2_START = 0x0000FFFF;
*(vu_long *)MPC5XXX_CS2_STOP = 0x0000FFFF;
restore = 0;
__asm__ volatile ("sync");
}
else if (*(volatile u16 *)(CFG_CS2_START + (1<<19)) == 0xA5A5) {
/* make sure that we access a mirrored address */
*(volatile u16 *)CFG_CS2_START = 0x1111;
__asm__ volatile ("sync");
if (*(volatile u16 *)(CFG_CS2_START + (1<<19)) == 0x1111) {
/* SRAM size = 512 kByte */
*(vu_long *)MPC5XXX_CS2_STOP = STOP_REG(CFG_CS2_START,
0x80000);
__asm__ volatile ("sync");
puts ("SRAM: 512 kB\n");
}
else
puts ("!! possible error in SRAM detection\n");
}
else {
puts ("SRAM: 1 MB\n");
}
/* restore origianl SRAM content */
if (restore) {
*(volatile u16 *)CFG_CS2_START = save;
__asm__ volatile ("sync");
}
/*
* Check for Grafic Controller
*/
/* save origianl FB content */
save = *(volatile u16 *)CFG_CS1_START;
restore = 1;
/* write test pattern to FB memory */
*(volatile u16 *)CFG_CS1_START = 0xA5A5;
__asm__ volatile ("sync");
/*
* Put a different pattern on the data lines: otherwise they may float
* long enough to read back what we wrote.
*/
tmp = *(volatile u16 *)CFG_FLASH_BASE;
if (tmp == 0xA5A5)
puts ("!! possible error in grafic controller detection\n");
if (*(volatile u16 *)CFG_CS1_START != 0xA5A5) {
/* no grafic controller at all, disable cs */
*(vu_long *)MPC5XXX_ADDECR &= ~(1 << 17);
*(vu_long *)MPC5XXX_CS1_START = 0x0000FFFF;
*(vu_long *)MPC5XXX_CS1_STOP = 0x0000FFFF;
restore = 0;
__asm__ volatile ("sync");
}
else {
puts ("VGA: SMI501 (Voyager) with 8 MB\n");
}
/* restore origianl FB content */
if (restore) {
*(volatile u16 *)CFG_CS1_START = save;
__asm__ volatile ("sync");
}
return 0;
}
#endif /* CONFIG_CS_AUTOCONF */