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83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
52f69f81 | 2 | /* |
576007ae | 3 | * Copyright (C) 2011-2015 by Vladimir Zapolskiy <[email protected]> |
52f69f81 VZ |
4 | */ |
5 | ||
6 | #include <common.h> | |
1eb69ae4 | 7 | #include <cpu_func.h> |
90526e9f | 8 | #include <net.h> |
ac2916a2 | 9 | #include <netdev.h> |
52f69f81 VZ |
10 | #include <asm/arch/cpu.h> |
11 | #include <asm/arch/clk.h> | |
12 | #include <asm/arch/wdt.h> | |
412ae53a | 13 | #include <asm/arch/sys_proto.h> |
52f69f81 VZ |
14 | #include <asm/io.h> |
15 | ||
16 | static struct clk_pm_regs *clk = (struct clk_pm_regs *)CLK_PM_BASE; | |
17 | static struct wdt_regs *wdt = (struct wdt_regs *)WDT_BASE; | |
18 | ||
19 | void reset_cpu(ulong addr) | |
20 | { | |
21 | /* Enable watchdog clock */ | |
22 | setbits_le32(&clk->timclk_ctrl, CLK_TIMCLK_WATCHDOG); | |
23 | ||
576007ae SL |
24 | /* To be compatible with the original U-Boot code: |
25 | * addr: - 0: perform hard reset. | |
26 | * - !=0: perform a soft reset; i.e. "RESOUT_N" not asserted). */ | |
27 | if (addr == 0) { | |
28 | /* Reset pulse length is 13005 peripheral clock frames */ | |
29 | writel(13000, &wdt->pulse); | |
52f69f81 | 30 | |
576007ae SL |
31 | /* Force WDOG_RESET2 and RESOUT_N signal active */ |
32 | writel(WDTIM_MCTRL_RESFRC2 | WDTIM_MCTRL_RESFRC1 | |
33 | | WDTIM_MCTRL_M_RES2, &wdt->mctrl); | |
34 | } else { | |
35 | /* Force match output active */ | |
36 | writel(0x01, &wdt->emr); | |
37 | ||
38 | /* Internal reset on match output (no pulse on "RESOUT_N") */ | |
39 | writel(WDTIM_MCTRL_M_RES1, &wdt->mctrl); | |
40 | } | |
52f69f81 VZ |
41 | |
42 | while (1) | |
43 | /* NOP */; | |
44 | } | |
45 | ||
46 | #if defined(CONFIG_ARCH_CPU_INIT) | |
47 | int arch_cpu_init(void) | |
48 | { | |
49 | /* | |
a187559e | 50 | * It might be necessary to flush data cache, if U-Boot is loaded |
52f69f81 VZ |
51 | * from kickstart bootloader, e.g. from S1L loader |
52 | */ | |
53 | flush_dcache_all(); | |
54 | ||
55 | return 0; | |
56 | } | |
57 | #else | |
58 | #error "You have to select CONFIG_ARCH_CPU_INIT" | |
59 | #endif | |
60 | ||
61 | #if defined(CONFIG_DISPLAY_CPUINFO) | |
62 | int print_cpuinfo(void) | |
63 | { | |
64 | printf("CPU: NXP LPC32XX\n"); | |
65 | printf("CPU clock: %uMHz\n", get_hclk_pll_rate() / 1000000); | |
66 | printf("AHB bus clock: %uMHz\n", get_hclk_clk_rate() / 1000000); | |
67 | printf("Peripheral clock: %uMHz\n", get_periph_clk_rate() / 1000000); | |
68 | ||
69 | return 0; | |
70 | } | |
71 | #endif | |
ac2916a2 AA |
72 | |
73 | #ifdef CONFIG_LPC32XX_ETH | |
74 | int cpu_eth_init(bd_t *bis) | |
75 | { | |
76 | lpc32xx_eth_initialize(bis); | |
77 | return 0; | |
78 | } | |
79 | #endif |