xref: /openbmc/u-boot/arch/arm/cpu/arm926ejs/spear/cpu.c (revision 93b283d49f933f95f3a6f40762936f454ac655a8)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * (C) Copyright 2010
4  * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com.
5  */
6 
7 #include <common.h>
8 #include <asm/io.h>
9 #include <asm/arch/hardware.h>
10 #include <asm/arch/spr_misc.h>
11 
12 int arch_cpu_init(void)
13 {
14 	struct misc_regs *const misc_p =
15 	    (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
16 	u32 periph1_clken, periph_clk_cfg;
17 
18 	periph1_clken = readl(&misc_p->periph1_clken);
19 
20 #if defined(CONFIG_SPEAR3XX)
21 	periph1_clken |= MISC_GPT2ENB;
22 #elif defined(CONFIG_SPEAR600)
23 	periph1_clken |= MISC_GPT3ENB;
24 #endif
25 
26 #if defined(CONFIG_PL011_SERIAL)
27 	periph1_clken |= MISC_UART0ENB;
28 
29 	periph_clk_cfg = readl(&misc_p->periph_clk_cfg);
30 	periph_clk_cfg &= ~CONFIG_SPEAR_UARTCLKMSK;
31 	periph_clk_cfg |= CONFIG_SPEAR_UART48M;
32 	writel(periph_clk_cfg, &misc_p->periph_clk_cfg);
33 #endif
34 #if defined(CONFIG_ETH_DESIGNWARE)
35 	periph1_clken |= MISC_ETHENB;
36 #endif
37 #if defined(CONFIG_DW_UDC)
38 	periph1_clken |= MISC_USBDENB;
39 #endif
40 #if defined(CONFIG_SYS_I2C_DW)
41 	periph1_clken |= MISC_I2CENB;
42 #endif
43 #if defined(CONFIG_ST_SMI)
44 	periph1_clken |= MISC_SMIENB;
45 #endif
46 #if defined(CONFIG_NAND_FSMC)
47 	periph1_clken |= MISC_FSMCENB;
48 #endif
49 #if defined(CONFIG_USB_EHCI_SPEAR)
50 	periph1_clken |= PERIPH_USBH1 | PERIPH_USBH2;
51 #endif
52 
53 	writel(periph1_clken, &misc_p->periph1_clken);
54 
55 	return 0;
56 }
57 
58 #ifdef CONFIG_DISPLAY_CPUINFO
59 int print_cpuinfo(void)
60 {
61 #ifdef CONFIG_SPEAR300
62 	printf("CPU:   SPEAr300\n");
63 #elif defined(CONFIG_SPEAR310)
64 	printf("CPU:   SPEAr310\n");
65 #elif defined(CONFIG_SPEAR320)
66 	printf("CPU:   SPEAr320\n");
67 #elif defined(CONFIG_SPEAR600)
68 	printf("CPU:   SPEAr600\n");
69 #else
70 #error CPU not supported in spear platform
71 #endif
72 	return 0;
73 }
74 #endif
75 
76 #if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_NAND_ECC_BCH) && defined(CONFIG_NAND_FSMC)
77 static int do_switch_ecc(cmd_tbl_t *cmdtp, int flag, int argc,
78 			 char *const argv[])
79 {
80 	if (argc != 2)
81 		goto usage;
82 
83 	if (strncmp(argv[1], "hw", 2) == 0) {
84 		/* 1-bit HW ECC */
85 		printf("Switching to 1-bit HW ECC\n");
86 		fsmc_nand_switch_ecc(1);
87 	} else if (strncmp(argv[1], "bch4", 2) == 0) {
88 		/* 4-bit SW ECC BCH4 */
89 		printf("Switching to 4-bit SW ECC (BCH4)\n");
90 		fsmc_nand_switch_ecc(4);
91 	} else {
92 		goto usage;
93 	}
94 
95 	return 0;
96 
97 usage:
98 	printf("Usage: nandecc %s\n", cmdtp->usage);
99 	return 1;
100 }
101 
102 U_BOOT_CMD(
103 	nandecc, 2, 0,	do_switch_ecc,
104 	"switch NAND ECC calculation algorithm",
105 	"hw|bch4 - Switch between NAND hardware 1-bit HW and"
106 	" 4-bit SW BCH\n"
107 );
108 #endif
109