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 <init.h>
15 #include <log.h>
16 #include <net.h>
17 #include <asm/arch/hardware.h>
18 #include <asm/global_data.h>
19 #include <asm/io.h>
20 #include <asm/arch/davinci_misc.h>
21
22 DECLARE_GLOBAL_DATA_PTR;
23
24 #ifndef CONFIG_SPL_BUILD
dram_init(void)25 int dram_init(void)
26 {
27 /* dram_init must store complete ramsize in gd->ram_size */
28 gd->ram_size = get_ram_size(
29 (void *)CONFIG_SYS_SDRAM_BASE,
30 CONFIG_MAX_RAM_BANK_SIZE);
31 return 0;
32 }
33
dram_init_banksize(void)34 int dram_init_banksize(void)
35 {
36 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
37 gd->bd->bi_dram[0].size = gd->ram_size;
38
39 return 0;
40 }
41 #endif
42
43 #ifdef CONFIG_DRIVER_TI_EMAC
44 /*
45 * Read ethernet MAC address from EEPROM for DVEVM compatible boards.
46 * Returns 1 if found, 0 otherwise.
47 */
dvevm_read_mac_address(uint8_t * buf)48 int dvevm_read_mac_address(uint8_t *buf)
49 {
50 #ifdef CONFIG_SYS_I2C_EEPROM_ADDR
51 /* Read MAC address. */
52 if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0x7F00,
53 CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &buf[0], 6))
54 goto i2cerr;
55
56 /* Check that MAC address is valid. */
57 if (!is_valid_ethaddr(buf))
58 goto err;
59
60 return 1; /* Found */
61
62 i2cerr:
63 printf("Read from EEPROM @ 0x%02x failed\n",
64 CONFIG_SYS_I2C_EEPROM_ADDR);
65 err:
66 #endif /* CONFIG_SYS_I2C_EEPROM_ADDR */
67
68 return 0;
69 }
70
71 /*
72 * Set the mii mode as MII or RMII
73 */
davinci_emac_mii_mode_sel(int mode_sel)74 void davinci_emac_mii_mode_sel(int mode_sel)
75 {
76 int val;
77
78 val = readl(&davinci_syscfg_regs->cfgchip3);
79 if (mode_sel == 0)
80 val &= ~(1 << 8);
81 else
82 val |= (1 << 8);
83 writel(val, &davinci_syscfg_regs->cfgchip3);
84 }
85
86 /*
87 * If there is no MAC address in the environment, then it will be initialized
88 * (silently) from the value in the EEPROM.
89 */
davinci_sync_env_enetaddr(uint8_t * rom_enetaddr)90 void davinci_sync_env_enetaddr(uint8_t *rom_enetaddr)
91 {
92 uint8_t env_enetaddr[6];
93 int ret;
94
95 ret = eth_env_get_enetaddr_by_index("eth", 0, env_enetaddr);
96 if (!ret) {
97 /*
98 * There is no MAC address in the environment, so we
99 * initialize it from the value in the EEPROM.
100 */
101 debug("### Setting environment from EEPROM MAC address = "
102 "\"%pM\"\n",
103 env_enetaddr);
104 ret = !eth_env_set_enetaddr("ethaddr", rom_enetaddr);
105 }
106 if (!ret)
107 printf("Failed to set mac address from EEPROM: %d\n", ret);
108 }
109 #endif /* CONFIG_DRIVER_TI_EMAC */
110
irq_init(void)111 void irq_init(void)
112 {
113 /*
114 * Mask all IRQs by clearing the global enable and setting
115 * the enable clear for all the 90 interrupts.
116 */
117 writel(0, &davinci_aintc_regs->ger);
118
119 writel(0, &davinci_aintc_regs->hier);
120
121 writel(0xffffffff, &davinci_aintc_regs->ecr1);
122 writel(0xffffffff, &davinci_aintc_regs->ecr2);
123 writel(0xffffffff, &davinci_aintc_regs->ecr3);
124 }
125
126 /*
127 * Enable PSC for various peripherals.
128 */
da8xx_configure_lpsc_items(const struct lpsc_resource * item,const int n_items)129 int da8xx_configure_lpsc_items(const struct lpsc_resource *item,
130 const int n_items)
131 {
132 int i;
133
134 for (i = 0; i < n_items; i++)
135 lpsc_on(item[i].lpsc_no);
136
137 return 0;
138 }
139