int i2155x_init(void)
{
pci_dev_t devno;
u32 val;
int i;
/*
* Find the Intel bridge.
*/
if ((devno = pci_find_devices(i2155x_ids, 0)) < 0) {
printf("Error: Intel bridge 2155x not found!\n");
return -1;
}
i2155x.devno = devno;
/*
* Get auto-configured base address for CSR access.
*/
pci_read_config_dword(devno, PCI_BASE_ADDRESS_1, &val);
if (val & PCI_BASE_ADDRESS_SPACE_IO) {
val &= PCI_BASE_ADDRESS_IO_MASK;
i2155x.csr = (volatile u32 *)(_IO_BASE + val);
} else {
val &= PCI_BASE_ADDRESS_MEM_MASK;
i2155x.csr = (volatile u32 *)val;
}
/*
* Translate downstream memory 2 (bar3) to base of shared memory.
*/
i2155x_set_bar_base(3, PN62_SMEM_DEFAULT);
/*
* Enable memory space, I/O space and bus master bits
* in both Primary and Secondary command registers.
*/
val = PCI_COMMAND_MEMORY|PCI_COMMAND_MASTER|PCI_COMMAND_IO;
pci_write_config_word(devno, 0x44, val);
pci_write_config_word(devno, 0x04, val);
/*
* Clear scratchpad registers.
*/
for (i = 0; i < (I2155X_SCRAPAD_MAX - 1); i++) {
i2155x_write_scrapad(i, 0x0);
}
/*
* Set interrupt line for Linux.
*/
pci_write_config_byte(devno, PCI_INTERRUPT_LINE, 3);
return 0;
}
int do_loadpci (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
char *s;
ulong addr = 0, count = 0;
u32 off;
int cmd, rcode = 0;
/* pre-set load_addr */
if ((s = getenv("loadaddr")) != NULL) {
addr = simple_strtoul(s, NULL, 16);
}
switch (argc) {
case 1:
break;
case 2:
addr = simple_strtoul(argv[1], NULL, 16);
break;
default:
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
printf ("## Ready for image download ...\n");
show_startup_phase(12);
while (1) {
/* Alive indicator */
i2155x_write_scrapad(BOOT_PROTO, BOOT_PROTO_READY);
/* Toggle status LEDs */
cmd = (count / 200) % 4; /* downscale */
set_led(4, cmd == 0 ? LED_1 : LED_0);
set_led(5, cmd == 1 ? LED_1 : LED_0);
set_led(6, cmd == 2 ? LED_1 : LED_0);
set_led(7, cmd == 3 ? LED_1 : LED_0);
udelay(1000);
count++;
cmd = i2155x_read_scrapad(BOOT_CMD);
if (cmd == BOOT_CMD_MOVE) {
off = i2155x_read_scrapad(BOOT_DATA);
off += addr;
i2155x_set_bar_base(3, off);
printf ("## BAR3 Addr moved = 0x%08x\n", off);
i2155x_write_scrapad(BOOT_CMD, ~cmd);
show_startup_phase(13);
}
else if (cmd == BOOT_CMD_BOOT) {
set_led(4, LED_1);
set_led(5, LED_1);
set_led(6, LED_1);
set_led(7, LED_1);
i2155x_write_scrapad(BOOT_CMD, ~cmd);
show_startup_phase(14);
break;
}
/* Abort if ctrl-c was pressed */
if (ctrlc()) {
printf("\nAbort\n");
return 0;
}
}
/* Repoint to the default shared memory */
i2155x_set_bar_base(3, PN62_SMEM_DEFAULT);
load_addr = addr;
printf ("## Start Addr = 0x%08lx\n", addr);
show_startup_phase(15);
/* Loading ok, check if we should attempt an auto-start */
if (((s = getenv("autostart")) != NULL) && (strcmp(s,"yes") == 0)) {
char *local_args[2];
local_args[0] = argv[0];
local_args[1] = NULL;
printf ("Automatic boot of image at addr 0x%08lX ...\n",
load_addr);
rcode = do_bootm (cmdtp, 0, 1, local_args);
}
#ifdef CONFIG_AUTOSCRIPT
if (load_addr) {
char *s;
if (((s = getenv("autoscript")) != NULL) && (strcmp(s,"yes") == 0)) {
printf("Running autoscript at addr 0x%08lX ...\n", load_addr);
rcode = autoscript (bd, load_addr);
}
}
#endif
return rcode;
}
