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Support for flash chip identification on the gmini

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5853 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jean-Philippe Bernardy 2005-02-08 15:12:25 +00:00
parent 9c6a549ad2
commit ed7c635bfc
1 changed files with 41 additions and 12 deletions
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53
apps/debug_menu.c
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@ -237,6 +237,27 @@ unsigned short crc_16(const unsigned char* buf, unsigned len)
} }
#if CONFIG_CPU == TCC730
extern int idatastart __attribute__ ((section(".idata")));
static unsigned flash_word_temp __attribute__ ((section (".idata")));
static void flash_write_word(unsigned addr, unsigned value) __attribute__ ((section(".icode")));
static void flash_write_word(unsigned addr, unsigned value) {
flash_word_temp = value;
long extAddr = (long)addr << 1;
ddma_transfer(1, 1, (char*)&flash_word_temp - (char*)&idatastart, extAddr, 2);
}
static unsigned flash_read_word(unsigned addr) __attribute__ ((section(".icode")));
static unsigned flash_read_word(unsigned addr) {
long extAddr = (long)addr << 1;
ddma_transfer(1, 1, (char*)&flash_word_temp - (char*)&idatastart, extAddr, 2);
return flash_word_temp;
}
#endif
/* Tool function to read the flash manufacturer and type, if available. /* Tool function to read the flash manufacturer and type, if available.
Only chips which could be reprogrammed in system will return values. Only chips which could be reprogrammed in system will return values.
@ -251,25 +272,33 @@ bool dbg_flash_id(unsigned* p_manufacturer, unsigned* p_device,
{ {
unsigned not_manu, not_id; /* read values before switching to ID mode */ unsigned not_manu, not_id; /* read values before switching to ID mode */
unsigned manu, id; /* read values when in ID mode */ unsigned manu, id; /* read values when in ID mode */
#if CONFIG_CPU == TCC730
#define FLASH(addr) (flash_read_word(addr))
#define SET_FLASH(addr, val) (flash_write_word((addr), (val)))
#else
volatile unsigned char* flash = (unsigned char*)0x2000000; /* flash mapping */ volatile unsigned char* flash = (unsigned char*)0x2000000; /* flash mapping */
#define FLASH(addr) (flash[addr])
#define SET_FLASH(addr, val) (flash[addr] = val)
#endif
int old_level; /* saved interrupt level */ int old_level; /* saved interrupt level */
not_manu = flash[0]; /* read the normal content */ not_manu = FLASH(0); /* read the normal content */
not_id = flash[1]; /* should be 'A' (0x41) and 'R' (0x52) from the "ARCH" marker */ not_id = FLASH(1); /* should be 'A' (0x41) and 'R' (0x52) from the "ARCH" marker */
/* disable interrupts, prevent any stray flash access */ /* disable interrupts, prevent any stray flash access */
old_level = set_irq_level(HIGHEST_IRQ_LEVEL); old_level = set_irq_level(HIGHEST_IRQ_LEVEL);
flash[addr1] = 0xAA; /* enter command mode */ SET_FLASH(addr1, 0xAA); /* enter command mode */
flash[addr2] = 0x55; SET_FLASH(addr2, 0x55);
flash[addr1] = 0x90; /* ID command */ SET_FLASH(addr1, 0x90); /* ID command */
/* Atmel wants 20ms pause here */ /* Atmel wants 20ms pause here */
/* sleep(HZ/50); no sleeping possible while interrupts are disabled */ /* sleep(HZ/50); no sleeping possible while interrupts are disabled */
manu = flash[0]; /* read the IDs */ manu = FLASH(0); /* read the IDs */
id = flash[1]; id = FLASH(1);
flash[0] = 0xF0; /* reset flash (back to normal read mode) */ SET_FLASH(0, 0xF0); /* reset flash (back to normal read mode) */
/* Atmel wants 20ms pause here */ /* Atmel wants 20ms pause here */
/* sleep(HZ/50); no sleeping possible while interrupts are disabled */ /* sleep(HZ/50); no sleeping possible while interrupts are disabled */
@ -858,7 +887,7 @@ bool view_battery(void)
{ {
int view = 0; int view = 0;
int i, x, y; int i, x, y;
int maxv, minv; unsigned short maxv, minv;
char buf[32]; char buf[32];
#ifdef HAVE_LCD_BITMAP #ifdef HAVE_LCD_BITMAP
@ -1426,9 +1455,9 @@ static bool dbg_disk_info(void)
break; break;
case 2: case 2:
snprintf(buf, sizeof buf, "%d MB", snprintf(buf, sizeof buf, "%ld MB",
((unsigned)identify_info[61] << 16 | ((unsigned long)identify_info[61] << 16 |
(unsigned)identify_info[60]) / 2048 ); (unsigned long)identify_info[60]) / 2048 );
lcd_puts(0, y++, "Size"); lcd_puts(0, y++, "Size");
lcd_puts(0, y++, buf); lcd_puts(0, y++, buf);
break; break;