New subject: Stops at 0xD2

28 Oct 2016

      * Riko Ho antonius.riko@gmail.com [161026 03:36]:
...
Everyone,
I tried to initialize UART on IT8718F and it stopped at 0xD2...
Here's the complete function, any clues ?
Yes, there is a halt() right after the post_code(0xd2); so that is where
your last post code is coming from.
use superiotool (from coreboot/util) to dump the superio registers on a
running system and compare them with what you write in there and the
data sheet.
Are you sure you are using the correct SuperIO driver?
Stefan
...
Cheers
void mainboard_romstage_entry(unsigned long bist)
{
    int s3resume = 0, boot_mode = 0;
if (bist == 0)
    enable_lapic();

ich7_enable_lpc();
    post_code(0xD1);
/* Enable SuperIO PM */
//lpc47m15x_enable_serial(PME_DEV, 0x680);
//lpc47m15x_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE); /* 0x3f8 */
    //enable_dev(SERIAL_DEV);
    //ite_conf_clkin();//needs a parameter, what is it ?

    /*
    04:24:31 AM) idwer: 24 or 48 MHz?

(04:25:18 AM) idwer: how do you find out? run superiotool when

having booted with the vendor bios, and look at            register
CR23
         */
    //ite_conf_clkin(CLKIN_DEV, ITE_UART_CLK_PREDIVIDE_24);
        ite_conf_clkin(CLKIN_DEV, ITE_UART_CLK_PREDIVIDE_48);
    ite_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE); /* 0x3f8 */
    //printk(BIOS_DEBUG,"HELLO WORLD FROM COREBOOT BY RIKO HO...\n");
    //it8716f_enable_dev(SERIAL_DEV, CONFIG_TTYS0_BASE);
it8718f_disable_reboot(GPIO_DEV);
/* Set up the console */
console_init();
    post_code(0xD2);
    printk(BIOS_DEBUG,"HELLO WORLD FROM COREBOOT ...\n");
    halt();
    post_code(0xD3);

/* Halt if there was a built in self test failure */
report_bist_failure(bist);

if (MCHBAR16(SSKPD) == 0xCAFE) {
    printk(BIOS_DEBUG, "soft reset detected.\n");
    boot_mode = 1;
}

/* Perform some early chipset initialization required
 * before RAM initialization can work
 */
i945_early_initialization();
    post_code(0xD4);
s3resume = southbridge_detect_s3_resume();

/* Enable SPD ROMs and DDR-II DRAM */
enable_smbus();

#if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
    dump_spd_registers();
#endif
sdram_initialize(s3resume ? 2 : boot_mode, NULL);

/* Perform some initialization that must run before stage2 */
early_ich7_init();

/* This should probably go away. Until now it is required
 * and mainboard specific
 */
rcba_config();

/* Chipset Errata! */
fixup_i945_errata();

/* Initialize the internal PCIe links before we go into stage2 */
i945_late_initialization(s3resume);

}
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Re: [coreboot] Stops at 0xD2

Cheers

Cheers