int lowlevel_init(void)
{
unsigned por_cfg = READ_CBUS_REG(ASSIST_POR_CONFIG);
if (((por_cfg & POR_ROM_BOOT_ENABLE) == 0)) {
// take me as a spi rom boot mode
romboot_info->por_cfg = POR_ROM_BOOT_ENABLE | POR_INTL_SPI;
romboot_info->boot_id = 0;
}
WRITE_CBUS_REG(PAD_PULL_UP_REG0,-1);
WRITE_CBUS_REG(PAD_PULL_UP_REG1,-1);
WRITE_CBUS_REG(PAD_PULL_UP_REG2,-1);
WRITE_CBUS_REG(PAD_PULL_UP_REG3,-1);
//changed by Elvis, add uart rx pull up
//pull up LINUX_RX(B15--->GPIOE_19) reg (7422y v1.pdf)
//GPIOE_19(M1-Apps v25- 2010-07-19-BGA372_297-6.xls serach B15)
WRITE_CBUS_REG( PAD_PULL_UP_REG3, READ_CBUS_REG(PAD_PULL_UP_REG3) & ~(1<<2) ); // Meson-pull-up-down_table.xlsx ( GPIOE_19 is PAD_PULL_UP_REG3---0x203e 2bits)
//Adjust 1us timer base
WRITE_CBUS_REG_BITS(PREG_CTLREG0_ADDR,CONFIG_CRYSTAL_MHZ,4,5);
pll_initial(); //running under default freq now . Before we fixed the PLL stable problem
unsigned clk;
if ((readl(P_HHI_MPEG_CLK_CNTL) & (1 << 8)) == 0) {
clk = CONFIG_CRYSTAL_MHZ * 1000000;
} else {
clk = romboot_info->clk81;
}
unsigned memory_size;
memory_size = PHYS_MEMORY_SIZE;
serial_init_with_clk(clk);
writel((1<<22)|1000000,P_WATCHDOG_TC);
do {
unsigned ret1, ret2, ret3, ret4;
ret1 = ret2 = ret3 = ret4 = 0;
por_cfg = 0;
ret1 = initial_ddr(&__hw_setting.ddr, __hw_setting.ddr.lane);
display_error(ret1, "DDr Init");
#ifdef CONFIG_MEM_TEST
ret2=memTestDevice((volatile datum *)PHYS_MEMORY_START,memory_size);
display_error(ret2,"TestDevice");
por_cfg=ret2;
#endif
ret3 = memTestDataBus((volatile datum *) PHYS_MEMORY_START);
display_error(ret3, "TestDataBus");
ret4 = memTestAddressBus((volatile datum *) PHYS_MEMORY_START,
memory_size);
display_error(ret4, "TestAddressBus");
por_cfg = ret1 | ret2 | ret3 | ret4;
} while (por_cfg != 0);
writel(0,P_WATCHDOG_RESET);
return 0;
}
int memTest(ulong addr, ulong length, ulong step)
{
printf ("TESTING MEMORY, PLEASE WAIT!\n");
if ((memTestDataBus((volatile unsigned char *)addr) != 0) ||
(memTestAddressBus((volatile unsigned char *)addr, length) != NULL) ||
(memTestDevice((volatile unsigned char *)addr, length, step) != NULL))
{
printf ("Memory Test Not Success !!!!!!!!!\n");
return (-1);
}
else
{
printf ("Memory Test Success \n");
return (0);
}
} /* memTest() */
