board/armadeus/apf27/apf27.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2008-2013 Eric Jarrige <[email protected]>
   4  *
   5  * based on the files by
   6  * Sascha Hauer, Pengutronix
   7  */
   8
   9 #include <common.h>
  10 #include <environment.h>
  11 #include <jffs2/jffs2.h>
  12 #include <nand.h>
  13 #include <netdev.h>
  14 #include <asm/io.h>
  15 #include <asm/arch/imx-regs.h>
  16 #include <asm/arch/gpio.h>
  17 #include <asm/gpio.h>
  18 #include <linux/errno.h>
  19 #include <u-boot/crc.h>
  20 #include "apf27.h"
  21 #include "fpga.h"
  22
  23 DECLARE_GLOBAL_DATA_PTR;
  24
  25 /*
  26  * Fuse bank 1 row 8 is "reserved for future use" and therefore available for
  27  * customer use. The APF27 board uses this fuse to store the board revision:
  28  * 0: initial board revision
  29  * 1: first revision - Presence of the second RAM chip on the board is blown in
  30  *     fuse bank 1 row 9  bit 0 - No hardware change
  31  * N: to be defined
  32  */
  33 static u32 get_board_rev(void)
  34 {
  35         struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE;
  36
  37         return readl(&iim->bank[1].fuse_regs[8]);
  38 }
  39
  40 /*
  41  * Fuse bank 1 row 9 is "reserved for future use" and therefore available for
  42  * customer use. The APF27 board revision 1 uses the bit 0 to permanently store
  43  * the presence of the second RAM chip
  44  * 0: AFP27 with 1 RAM of 64 MiB
  45  * 1: AFP27 with 2 RAM chips of 64 MiB each (128MB)
  46  */
  47 static int get_num_ram_bank(void)
  48 {
  49         struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE;
  50         int nr_dram_banks = 1;
  51
  52         if ((get_board_rev() > 0) && (CONFIG_NR_DRAM_BANKS > 1))
  53                 nr_dram_banks += readl(&iim->bank[1].fuse_regs[9]) & 0x01;
  54         else
  55                 nr_dram_banks = CONFIG_NR_DRAM_POPULATED;
  56
  57         return nr_dram_banks;
  58 }
  59
  60 static void apf27_port_init(int port, u32 gpio_dr, u32 ocr1, u32 ocr2,
  61                             u32 iconfa1, u32 iconfa2, u32 iconfb1, u32 iconfb2,
  62                             u32 icr1, u32 icr2, u32 imr, u32 gpio_dir, u32 gpr,
  63                             u32 puen, u32 gius)
  64 {
  65         struct gpio_port_regs *regs = (struct gpio_port_regs *)IMX_GPIO_BASE;
  66
  67         writel(gpio_dr,   &regs->port[port].gpio_dr);
  68         writel(ocr1,      &regs->port[port].ocr1);
  69         writel(ocr2,      &regs->port[port].ocr2);
  70         writel(iconfa1,   &regs->port[port].iconfa1);
  71         writel(iconfa2,   &regs->port[port].iconfa2);
  72         writel(iconfb1,   &regs->port[port].iconfb1);
  73         writel(iconfb2,   &regs->port[port].iconfb2);
  74         writel(icr1,      &regs->port[port].icr1);
  75         writel(icr2,      &regs->port[port].icr2);
  76         writel(imr,       &regs->port[port].imr);
  77         writel(gpio_dir,  &regs->port[port].gpio_dir);
  78         writel(gpr,       &regs->port[port].gpr);
  79         writel(puen,      &regs->port[port].puen);
  80         writel(gius,      &regs->port[port].gius);
  81 }
  82
  83 #define APF27_PORT_INIT(n) apf27_port_init(PORT##n, ACFG_DR_##n##_VAL,    \
  84         ACFG_OCR1_##n##_VAL, ACFG_OCR2_##n##_VAL, ACFG_ICFA1_##n##_VAL,   \
  85         ACFG_ICFA2_##n##_VAL, ACFG_ICFB1_##n##_VAL, ACFG_ICFB2_##n##_VAL, \
  86         ACFG_ICR1_##n##_VAL, ACFG_ICR2_##n##_VAL, ACFG_IMR_##n##_VAL,     \
  87         ACFG_DDIR_##n##_VAL, ACFG_GPR_##n##_VAL, ACFG_PUEN_##n##_VAL,     \
  88         ACFG_GIUS_##n##_VAL)
  89
  90 static void apf27_iomux_init(void)
  91 {
  92         APF27_PORT_INIT(A);
  93         APF27_PORT_INIT(B);
  94         APF27_PORT_INIT(C);
  95         APF27_PORT_INIT(D);
  96         APF27_PORT_INIT(E);
  97         APF27_PORT_INIT(F);
  98 }
  99
 100 static int apf27_devices_init(void)
 101 {
 102         int i;
 103         unsigned int mode[] = {
 104                 PC5_PF_I2C2_DATA,
 105                 PC6_PF_I2C2_CLK,
 106                 PD17_PF_I2C_DATA,
 107                 PD18_PF_I2C_CLK,
 108         };
 109
 110         for (i = 0; i < ARRAY_SIZE(mode); i++)
 111                 imx_gpio_mode(mode[i]);
 112
 113 #ifdef CONFIG_MXC_UART
 114         mx27_uart1_init_pins();
 115 #endif
 116
 117 #ifdef CONFIG_FEC_MXC
 118         mx27_fec_init_pins();
 119 #endif
 120
 121 #ifdef CONFIG_MMC_MXC
 122         mx27_sd2_init_pins();
 123         imx_gpio_mode((GPIO_PORTF | GPIO_OUT | GPIO_PUEN | GPIO_GPIO | 16));
 124         gpio_request(PC_PWRON, "pc_pwron");
 125         gpio_set_value(PC_PWRON, 1);
 126 #endif
 127         return 0;
 128 }
 129
 130 static void apf27_setup_csx(void)
 131 {
 132         struct weim_regs *weim = (struct weim_regs *)IMX_WEIM_BASE;
 133
 134         writel(ACFG_CS0U_VAL, &weim->cs0u);
 135         writel(ACFG_CS0L_VAL, &weim->cs0l);
 136         writel(ACFG_CS0A_VAL, &weim->cs0a);
 137
 138         writel(ACFG_CS1U_VAL, &weim->cs1u);
 139         writel(ACFG_CS1L_VAL, &weim->cs1l);
 140         writel(ACFG_CS1A_VAL, &weim->cs1a);
 141
 142         writel(ACFG_CS2U_VAL, &weim->cs2u);
 143         writel(ACFG_CS2L_VAL, &weim->cs2l);
 144         writel(ACFG_CS2A_VAL, &weim->cs2a);
 145
 146         writel(ACFG_CS3U_VAL, &weim->cs3u);
 147         writel(ACFG_CS3L_VAL, &weim->cs3l);
 148         writel(ACFG_CS3A_VAL, &weim->cs3a);
 149
 150         writel(ACFG_CS4U_VAL, &weim->cs4u);
 151         writel(ACFG_CS4L_VAL, &weim->cs4l);
 152         writel(ACFG_CS4A_VAL, &weim->cs4a);
 153
 154         writel(ACFG_CS5U_VAL, &weim->cs5u);
 155         writel(ACFG_CS5L_VAL, &weim->cs5l);
 156         writel(ACFG_CS5A_VAL, &weim->cs5a);
 157
 158         writel(ACFG_EIM_VAL, &weim->eim);
 159 }
 160
 161 static void apf27_setup_port(void)
 162 {
 163         struct system_control_regs *system =
 164                 (struct system_control_regs *)IMX_SYSTEM_CTL_BASE;
 165
 166         writel(ACFG_FMCR_VAL, &system->fmcr);
 167 }
 168
 169 int board_init(void)
 170 {
 171         gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
 172
 173         apf27_setup_csx();
 174         apf27_setup_port();
 175         apf27_iomux_init();
 176         apf27_devices_init();
 177 #if defined(CONFIG_FPGA)
 178         APF27_init_fpga();
 179 #endif
 180
 181
 182         return 0;
 183 }
 184
 185 int dram_init(void)
 186 {
 187         gd->ram_size = get_ram_size((void *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE);
 188         if (get_num_ram_bank() > 1)
 189                 gd->ram_size += get_ram_size((void *)PHYS_SDRAM_2,
 190                                              PHYS_SDRAM_2_SIZE);
 191
 192         return 0;
 193 }
 194
 195 int dram_init_banksize(void)
 196 {
 197         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
 198         gd->bd->bi_dram[0].size  = get_ram_size((void *)PHYS_SDRAM_1,
 199                                                 PHYS_SDRAM_1_SIZE);
 200         gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
 201         if (get_num_ram_bank() > 1)
 202                 gd->bd->bi_dram[1].size = get_ram_size((void *)PHYS_SDRAM_2,
 203                                              PHYS_SDRAM_2_SIZE);
 204         else
 205                 gd->bd->bi_dram[1].size = 0;
 206
 207         return 0;
 208 }
 209
 210 ulong board_get_usable_ram_top(ulong total_size)
 211 {
 212         ulong ramtop;
 213
 214         if (get_num_ram_bank() > 1)
 215                 ramtop = PHYS_SDRAM_2 + get_ram_size((void *)PHYS_SDRAM_2,
 216                                                      PHYS_SDRAM_2_SIZE);
 217         else
 218                 ramtop = PHYS_SDRAM_1 + get_ram_size((void *)PHYS_SDRAM_1,
 219                                                      PHYS_SDRAM_1_SIZE);
 220
 221         return ramtop;
 222 }
 223
 224 int checkboard(void)
 225 {
 226         printf("Board: Armadeus APF27 revision %d\n", get_board_rev());
 227         return 0;
 228 }
 229
 230 #ifdef CONFIG_SPL_BUILD
 231 inline void hang(void)
 232 {
 233         for (;;)
 234                 ;
 235 }
 236
 237 void board_init_f(ulong bootflag)
 238 {
 239         /*
 240          * copy ourselves from where we are running to where we were
 241          * linked at. Use ulong pointers as all addresses involved
 242          * are 4-byte-aligned.
 243          */
 244         ulong *start_ptr, *end_ptr, *link_ptr, *run_ptr, *dst;
 245         asm volatile ("ldr %0, =_start" : "=r"(start_ptr));
 246         asm volatile ("ldr %0, =_end" : "=r"(end_ptr));
 247         asm volatile ("ldr %0, =board_init_f" : "=r"(link_ptr));
 248         asm volatile ("adr %0, board_init_f" : "=r"(run_ptr));
 249         for (dst = start_ptr; dst < end_ptr; dst++)
 250                 *dst = *(dst+(run_ptr-link_ptr));
 251
 252         /*
 253          * branch to nand_boot's link-time address.
 254          */
 255         asm volatile("ldr pc, =nand_boot");
 256 }
 257 #endif /* CONFIG_SPL_BUILD */