void
sdram_init(void)
{
volatile immap_t *immap = (immap_t *)CFG_IMMR;
volatile ccsr_lbc_t *lbc= &immap->im_lbc;
uint *sdram_addr = (uint *)CFG_LBC_SDRAM_BASE;
puts(" SDRAM: ");
print_size (CFG_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
/*
* Setup SDRAM Base and Option Registers
*/
lbc->or2 = CFG_OR2_PRELIM;
lbc->br2 = CFG_BR2_PRELIM;
lbc->lbcr = CFG_LBC_LBCR;
asm("msync");
lbc->lsrt = CFG_LBC_LSRT;
lbc->mrtpr = CFG_LBC_MRTPR;
asm("sync");
/*
* Configure the SDRAM controller.
*/
lbc->lsdmr = CFG_LBC_LSDMR_1;
asm("sync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
udelay(100);
lbc->lsdmr = CFG_LBC_LSDMR_2;
asm("sync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
udelay(100);
lbc->lsdmr = CFG_LBC_LSDMR_3;
asm("sync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
udelay(100);
lbc->lsdmr = CFG_LBC_LSDMR_4;
asm("sync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
udelay(100);
lbc->lsdmr = CFG_LBC_LSDMR_5;
asm("sync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
udelay(100);
}
/*
* Initialize SDRAM memory on the Local Bus.
*/
void lbc_sdram_init(void)
{
volatile fsl_lbc_t *lbc = LBC_BASE_ADDR;
uint *sdram_addr = (uint *)CONFIG_SYS_LBC_SDRAM_BASE;
puts("LBC SDRAM: ");
print_size(CONFIG_SYS_LBC_SDRAM_SIZE * 1024 * 1024,
"\n ");
/*
* Setup SDRAM Base and Option Registers
*/
set_lbc_or(2, CONFIG_SYS_OR2_PRELIM);
set_lbc_br(2, CONFIG_SYS_BR2_PRELIM);
lbc->lbcr = CONFIG_SYS_LBC_LBCR;
asm("msync");
lbc->lsrt = CONFIG_SYS_LBC_LSRT;
lbc->mrtpr = CONFIG_SYS_LBC_MRTPR;
asm("sync");
/*
* Configure the SDRAM controller.
*/
lbc->lsdmr = CONFIG_SYS_LBC_LSDMR_1;
asm("sync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
udelay(100);
lbc->lsdmr = CONFIG_SYS_LBC_LSDMR_2;
asm("sync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
udelay(100);
lbc->lsdmr = CONFIG_SYS_LBC_LSDMR_3;
asm("sync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
udelay(100);
lbc->lsdmr = CONFIG_SYS_LBC_LSDMR_4;
asm("sync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
udelay(100);
lbc->lsdmr = CONFIG_SYS_LBC_LSDMR_5;
asm("sync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
udelay(100);
}
void timer_interrupt(struct pt_regs *regs)
{
/* call cpu specific function from $(CPU)/interrupts.c */
timer_interrupt_cpu(regs);
timestamp++;
ppcDcbf(×tamp);
/* Restore Decrementer Count */
set_dec(decrementer_count);
#if defined(CONFIG_WATCHDOG) || defined (CONFIG_HW_WATCHDOG)
if ((timestamp % (CFG_WATCHDOG_FREQ)) == 0)
WATCHDOG_RESET();
#endif /* CONFIG_WATCHDOG || CONFIG_HW_WATCHDOG */
#ifdef CONFIG_STATUS_LED
status_led_tick(timestamp);
#endif /* CONFIG_STATUS_LED */
#ifdef CONFIG_SHOW_ACTIVITY
board_show_activity(timestamp);
#endif /* CONFIG_SHOW_ACTIVITY */
}
int
flush405Dcache(char *address, int count)
{
unsigned int lcl_addr = (unsigned int) address;
unsigned int lcl_target;
/* promote to nearest cache sector
*/
lcl_target = (lcl_addr + count + SECTOR_SIZE - 1) & ~SECTOR_MASK;
lcl_addr &= ~SECTOR_MASK;
while (lcl_addr != lcl_target) {
ppcDcbf((void *)lcl_addr);
lcl_addr += SECTOR_SIZE;
}
ppcSync();
return(0);
}
/*
* Initialize SDRAM memory on the Local Bus.
*/
void
sdram_init(void)
{
#if defined(CONFIG_SYS_OR2_PRELIM) && defined(CONFIG_SYS_BR2_PRELIM)
uint idx;
volatile ccsr_lbc_t *lbc = (void *)(CONFIG_SYS_MPC85xx_LBC_ADDR);
uint *sdram_addr = (uint *)CONFIG_SYS_LBC_SDRAM_BASE;
uint cpu_board_rev;
uint lsdmr_common;
puts(" SDRAM: ");
print_size (CONFIG_SYS_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
/*
* Setup SDRAM Base and Option Registers
*/
lbc->or2 = CONFIG_SYS_OR2_PRELIM;
asm("msync");
lbc->br2 = CONFIG_SYS_BR2_PRELIM;
asm("msync");
lbc->lbcr = CONFIG_SYS_LBC_LBCR;
asm("msync");
lbc->lsrt = CONFIG_SYS_LBC_LSRT;
lbc->mrtpr = CONFIG_SYS_LBC_MRTPR;
asm("msync");
/*
* Determine which address lines to use baed on CPU board rev.
*/
cpu_board_rev = get_cpu_board_revision();
lsdmr_common = CONFIG_SYS_LBC_LSDMR_COMMON;
if (cpu_board_rev == MPC85XX_CPU_BOARD_REV_1_0) {
lsdmr_common |= LSDMR_BSMA1617;
} else if (cpu_board_rev == MPC85XX_CPU_BOARD_REV_1_1) {
lsdmr_common |= LSDMR_BSMA1516;
} else {
/*
* Assume something unable to identify itself is
* really old, and likely has lines 16/17 mapped.
*/
lsdmr_common |= LSDMR_BSMA1617;
}
/*
* Issue PRECHARGE ALL command.
*/
lbc->lsdmr = lsdmr_common | LSDMR_OP_PCHALL;
asm("sync;msync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
udelay(100);
/*
* Issue 8 AUTO REFRESH commands.
*/
for (idx = 0; idx < 8; idx++) {
lbc->lsdmr = lsdmr_common | LSDMR_OP_ARFRSH;
asm("sync;msync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
udelay(100);
}
/*
* Issue 8 MODE-set command.
*/
lbc->lsdmr = lsdmr_common | LSDMR_OP_MRW;
asm("sync;msync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
udelay(100);
/*
* Issue NORMAL OP command.
*/
lbc->lsdmr = lsdmr_common | LSDMR_OP_NORMAL;
asm("sync;msync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
udelay(200); /* Overkill. Must wait > 200 bus cycles */
#endif /* enable SDRAM init */
}
/*
* Initialize SDRAM memory on the Local Bus.
*/
void
sdram_init(void)
{
#if defined(CONFIG_SYS_OR2_PRELIM) && defined(CONFIG_SYS_BR2_PRELIM)
uint idx;
volatile ccsr_lbc_t *lbc = (void *)(CONFIG_SYS_MPC85xx_LBC_ADDR);
uint *sdram_addr = (uint *)CONFIG_SYS_LBC_SDRAM_BASE;
uint lsdmr_common;
puts(" SDRAM: ");
print_size (CONFIG_SYS_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
/*
* Setup SDRAM Base and Option Registers
*/
lbc->or2 = CONFIG_SYS_OR2_PRELIM;
asm("msync");
lbc->br2 = CONFIG_SYS_BR2_PRELIM;
asm("msync");
lbc->lbcr = CONFIG_SYS_LBC_LBCR;
asm("msync");
lbc->lsrt = CONFIG_SYS_LBC_LSRT;
lbc->mrtpr = CONFIG_SYS_LBC_MRTPR;
asm("msync");
/*
* MPC8568 uses "new" 15-16 style addressing.
*/
lsdmr_common = CONFIG_SYS_LBC_LSDMR_COMMON;
lsdmr_common |= LSDMR_BSMA1516;
/*
* Issue PRECHARGE ALL command.
*/
lbc->lsdmr = lsdmr_common | LSDMR_OP_PCHALL;
asm("sync;msync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
udelay(100);
/*
* Issue 8 AUTO REFRESH commands.
*/
for (idx = 0; idx < 8; idx++) {
lbc->lsdmr = lsdmr_common | LSDMR_OP_ARFRSH;
asm("sync;msync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
udelay(100);
}
/*
* Issue 8 MODE-set command.
*/
lbc->lsdmr = lsdmr_common | LSDMR_OP_MRW;
asm("sync;msync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
udelay(100);
/*
* Issue NORMAL OP command.
*/
lbc->lsdmr = lsdmr_common | LSDMR_OP_NORMAL;
asm("sync;msync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
udelay(200); /* Overkill. Must wait > 200 bus cycles */
#endif /* enable SDRAM init */
}
static void program_ecc(u32 start_address,
u32 num_bytes,
u32 tlb_word2_i_value)
{
u32 current_address;
u32 end_address;
u32 address_increment;
u32 val;
char str[] = "ECC generation -";
char slash[] = "\\|/-\\|/-";
int loop = 0;
int loopi = 0;
current_address = start_address;
sync();
eieio();
wait_ddr_idle();
if (tlb_word2_i_value == TLB_WORD2_I_ENABLE) {
/* ECC bit set method for non-cached memory */
address_increment = 4;
end_address = current_address + num_bytes;
puts(str);
while (current_address < end_address) {
*((u32 *)current_address) = 0x00000000;
current_address += address_increment;
if ((loop++ % (2 << 20)) == 0) {
putc('\b');
putc(slash[loopi++ % 8]);
}
}
blank_string(strlen(str));
} else {
/* ECC bit set method for cached memory */
#if 0 /* test-only: will remove this define later, when ECC problems are solved! */
/*
* Some boards (like lwmon5) need to preserve the memory
* content upon ECC generation (for the log-buffer).
* Therefore we don't fill the memory with a pattern or
* just zero it, but write the same values back that are
* already in the memory cells.
*/
address_increment = CFG_CACHELINE_SIZE;
end_address = current_address + num_bytes;
current_address = start_address;
while (current_address < end_address) {
/*
* TODO: Th following sequence doesn't work correctly.
* Just invalidating and flushing the cache doesn't
* seem to trigger the re-write of the memory.
*/
ppcDcbi(current_address);
ppcDcbf(current_address);
current_address += CFG_CACHELINE_SIZE;
}
#else
dcbz_area(start_address, num_bytes);
dflush();
#endif
}
sync();
eieio();
wait_ddr_idle();
/* Clear error status */
mfsdram(DDR0_00, val);
mtsdram(DDR0_00, val | DDR0_00_INT_ACK_ALL);
/* Set 'int_mask' parameter to functionnal value */
mfsdram(DDR0_01, val);
mtsdram(DDR0_01, ((val &~ DDR0_01_INT_MASK_MASK) | DDR0_01_INT_MASK_ALL_OFF));
sync();
eieio();
wait_ddr_idle();
}