1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Miscelaneous DaVinci functions.
4 *
5 * Copyright (C) 2009 Nick Thompson, GE Fanuc Ltd, <nick.thompson@gefanuc.com>
6 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
7 * Copyright (C) 2008 Lyrtech <www.lyrtech.com>
8 * Copyright (C) 2004 Texas Instruments.
9 */
10
11 #include <common.h>
12 #include <env.h>
13 #include <i2c.h>
14 #include <net.h>
15 #include <asm/arch/hardware.h>
16 #include <asm/io.h>
17 #include <asm/arch/davinci_misc.h>
18
19 DECLARE_GLOBAL_DATA_PTR;
20
21 #ifndef CONFIG_SPL_BUILD
dram_init(void)22 int dram_init(void)
23 {
24 /* dram_init must store complete ramsize in gd->ram_size */
25 gd->ram_size = get_ram_size(
26 (void *)CONFIG_SYS_SDRAM_BASE,
27 CONFIG_MAX_RAM_BANK_SIZE);
28 return 0;
29 }
30
dram_init_banksize(void)31 int dram_init_banksize(void)
32 {
33 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
34 gd->bd->bi_dram[0].size = gd->ram_size;
35
36 return 0;
37 }
38 #endif
39
40 #ifdef CONFIG_DRIVER_TI_EMAC
41 /*
42 * Read ethernet MAC address from EEPROM for DVEVM compatible boards.
43 * Returns 1 if found, 0 otherwise.
44 */
dvevm_read_mac_address(uint8_t * buf)45 int dvevm_read_mac_address(uint8_t *buf)
46 {
47 #ifdef CONFIG_SYS_I2C_EEPROM_ADDR
48 /* Read MAC address. */
49 if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0x7F00,
50 CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &buf[0], 6))
51 goto i2cerr;
52
53 /* Check that MAC address is valid. */
54 if (!is_valid_ethaddr(buf))
55 goto err;
56
57 return 1; /* Found */
58
59 i2cerr:
60 printf("Read from EEPROM @ 0x%02x failed\n",
61 CONFIG_SYS_I2C_EEPROM_ADDR);
62 err:
63 #endif /* CONFIG_SYS_I2C_EEPROM_ADDR */
64
65 return 0;
66 }
67
68 /*
69 * Set the mii mode as MII or RMII
70 */
davinci_emac_mii_mode_sel(int mode_sel)71 void davinci_emac_mii_mode_sel(int mode_sel)
72 {
73 int val;
74
75 val = readl(&davinci_syscfg_regs->cfgchip3);
76 if (mode_sel == 0)
77 val &= ~(1 << 8);
78 else
79 val |= (1 << 8);
80 writel(val, &davinci_syscfg_regs->cfgchip3);
81 }
82
83 /*
84 * If there is no MAC address in the environment, then it will be initialized
85 * (silently) from the value in the EEPROM.
86 */
davinci_sync_env_enetaddr(uint8_t * rom_enetaddr)87 void davinci_sync_env_enetaddr(uint8_t *rom_enetaddr)
88 {
89 uint8_t env_enetaddr[6];
90 int ret;
91
92 ret = eth_env_get_enetaddr_by_index("eth", 0, env_enetaddr);
93 if (!ret) {
94 /*
95 * There is no MAC address in the environment, so we
96 * initialize it from the value in the EEPROM.
97 */
98 debug("### Setting environment from EEPROM MAC address = "
99 "\"%pM\"\n",
100 env_enetaddr);
101 ret = !eth_env_set_enetaddr("ethaddr", rom_enetaddr);
102 }
103 if (!ret)
104 printf("Failed to set mac address from EEPROM: %d\n", ret);
105 }
106 #endif /* CONFIG_DRIVER_TI_EMAC */
107
irq_init(void)108 void irq_init(void)
109 {
110 /*
111 * Mask all IRQs by clearing the global enable and setting
112 * the enable clear for all the 90 interrupts.
113 */
114 writel(0, &davinci_aintc_regs->ger);
115
116 writel(0, &davinci_aintc_regs->hier);
117
118 writel(0xffffffff, &davinci_aintc_regs->ecr1);
119 writel(0xffffffff, &davinci_aintc_regs->ecr2);
120 writel(0xffffffff, &davinci_aintc_regs->ecr3);
121 }
122
123 /*
124 * Enable PSC for various peripherals.
125 */
da8xx_configure_lpsc_items(const struct lpsc_resource * item,const int n_items)126 int da8xx_configure_lpsc_items(const struct lpsc_resource *item,
127 const int n_items)
128 {
129 int i;
130
131 for (i = 0; i < n_items; i++)
132 lpsc_on(item[i].lpsc_no);
133
134 return 0;
135 }
136