1 /*
2  * Embest/Timll DevKit3250 board support
3  *
4  * Copyright (C) 2011-2015 Vladimir Zapolskiy <vz@mleia.com>
5  *
6  * SPDX-License-Identifier:	GPL-2.0+
7  */
8 
9 #include <common.h>
10 #include <asm/arch/sys_proto.h>
11 #include <asm/arch/clk.h>
12 #include <asm/arch/cpu.h>
13 #include <asm/arch/emc.h>
14 #include <asm/arch/wdt.h>
15 #include <asm/io.h>
16 
17 DECLARE_GLOBAL_DATA_PTR;
18 
19 static struct emc_regs *emc = (struct emc_regs *)EMC_BASE;
20 static struct clk_pm_regs *clk = (struct clk_pm_regs *)CLK_PM_BASE;
21 static struct wdt_regs *wdt = (struct wdt_regs *)WDT_BASE;
22 
23 void reset_periph(void)
24 {
25 	/* This function resets peripherals by triggering RESOUT_N */
26 	setbits_le32(&clk->timclk_ctrl, CLK_TIMCLK_WATCHDOG);
27 	writel(WDTIM_MCTRL_RESFRC1, &wdt->mctrl);
28 	udelay(300);
29 
30 	writel(0, &wdt->mctrl);
31 	clrbits_le32(&clk->timclk_ctrl, CLK_TIMCLK_WATCHDOG);
32 
33 	/* Such a long delay is needed to initialize SMSC phy */
34 	udelay(10000);
35 }
36 
37 int board_early_init_f(void)
38 {
39 	lpc32xx_uart_init(CONFIG_SYS_LPC32XX_UART);
40 	lpc32xx_i2c_init(1);
41 	lpc32xx_i2c_init(2);
42 	lpc32xx_ssp_init();
43 	lpc32xx_mac_init();
44 
45 	/*
46 	 * nWP may be controlled by GPO19, but unpopulated by default R23
47 	 * makes no sense to configure this GPIO level, nWP is always high
48 	 */
49 	lpc32xx_slc_nand_init();
50 
51 	return 0;
52 }
53 
54 int board_init(void)
55 {
56 	/* adress of boot parameters */
57 	gd->bd->bi_boot_params  = CONFIG_SYS_SDRAM_BASE + 0x100;
58 
59 #ifdef CONFIG_SYS_FLASH_CFI
60 	/* Use 16-bit memory interface for NOR Flash */
61 	emc->stat[0].config	= EMC_STAT_CONFIG_PB | EMC_STAT_CONFIG_16BIT;
62 
63 	/* Change the NOR timings to optimum value to get maximum bandwidth */
64 	emc->stat[0].waitwen	= EMC_STAT_WAITWEN(1);
65 	emc->stat[0].waitoen	= EMC_STAT_WAITOEN(0);
66 	emc->stat[0].waitrd	= EMC_STAT_WAITRD(12);
67 	emc->stat[0].waitpage	= EMC_STAT_WAITPAGE(12);
68 	emc->stat[0].waitwr	= EMC_STAT_WAITWR(5);
69 	emc->stat[0].waitturn	= EMC_STAT_WAITTURN(2);
70 #endif
71 
72 	return 0;
73 }
74 
75 int dram_init(void)
76 {
77 	gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
78 				    CONFIG_SYS_SDRAM_SIZE);
79 
80 	return 0;
81 }
82