board/keymile/kmp204x/kmp204x.c

   1 /*
   2  * (C) Copyright 2013 Keymile AG
   3  * Valentin Longchamp <valentin.longchamp@keymile.com>
   4  *
   5  * Copyright 2011,2012 Freescale Semiconductor, Inc.
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <common.h>
  11 #include <command.h>
  12 #include <netdev.h>
  13 #include <linux/compiler.h>
  14 #include <asm/mmu.h>
  15 #include <asm/processor.h>
  16 #include <asm/cache.h>
  17 #include <asm/immap_85xx.h>
  18 #include <asm/fsl_law.h>
  19 #include <asm/fsl_serdes.h>
  20 #include <asm/fsl_portals.h>
  21 #include <asm/fsl_liodn.h>
  22 #include <fm_eth.h>
  23
  24 #include "../common/common.h"
  25 #include "kmp204x.h"
  26
  27 DECLARE_GLOBAL_DATA_PTR;
  28
  29 int checkboard(void)
  30 {
  31         printf("Board: Keymile %s\n", CONFIG_KM_BOARD_NAME);
  32
  33         return 0;
  34 }
  35
  36 /* I2C deblocking uses the algorithm defined in board/keymile/common/common.c
  37  * 2 dedicated QRIO GPIOs externally pull the SCL and SDA lines
  38  * For I2C only the low state is activly driven and high state is pulled-up
  39  * by a resistor. Therefore the deblock GPIOs are used
  40  *  -> as an active output to drive a low state
  41  *  -> as an open-drain input to have a pulled-up high state
  42  */
  43
  44 /* QRIO GPIOs used for deblocking */
  45 #define DEBLOCK_PORT1   GPIO_A
  46 #define DEBLOCK_SCL1    20
  47 #define DEBLOCK_SDA1    21
  48
  49 /* By default deblock GPIOs are floating */
  50 static void i2c_deblock_gpio_cfg(void)
  51 {
  52         /* set I2C bus 1 deblocking GPIOs input, but 0 value for open drain */
  53         qrio_gpio_direction_input(DEBLOCK_PORT1, DEBLOCK_SCL1);
  54         qrio_gpio_direction_input(DEBLOCK_PORT1, DEBLOCK_SDA1);
  55
  56         qrio_set_gpio(DEBLOCK_PORT1, DEBLOCK_SCL1, 0);
  57         qrio_set_gpio(DEBLOCK_PORT1, DEBLOCK_SDA1, 0);
  58 }
  59
  60 void set_sda(int state)
  61 {
  62         qrio_set_opendrain_gpio(DEBLOCK_PORT1, DEBLOCK_SDA1, state);
  63 }
  64
  65 void set_scl(int state)
  66 {
  67         qrio_set_opendrain_gpio(DEBLOCK_PORT1, DEBLOCK_SCL1, state);
  68 }
  69
  70 int get_sda(void)
  71 {
  72         return qrio_get_gpio(DEBLOCK_PORT1, DEBLOCK_SDA1);
  73 }
  74
  75 int get_scl(void)
  76 {
  77         return qrio_get_gpio(DEBLOCK_PORT1, DEBLOCK_SCL1);
  78 }
  79
  80
  81 #define ZL30158_RST     8
  82 #define ZL30343_RST     9
  83
  84 int board_early_init_f(void)
  85 {
  86         ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
  87
  88         /* board only uses the DDR_MCK0, so disable the DDR_MCK1/2/3 */
  89         setbits_be32(&gur->ddrclkdr, 0x001f000f);
  90
  91         /* take the Zarlinks out of reset as soon as possible */
  92         qrio_prst(ZL30158_RST, false, false);
  93         qrio_prst(ZL30343_RST, false, false);
  94
  95         /* and set their reset to power-up only */
  96         qrio_prstcfg(ZL30158_RST, PRSTCFG_POWUP_RST);
  97         qrio_prstcfg(ZL30343_RST, PRSTCFG_POWUP_RST);
  98
  99         return 0;
 100 }
 101
 102 int board_early_init_r(void)
 103 {
 104         int ret = 0;
 105         /* Flush d-cache and invalidate i-cache of any FLASH data */
 106         flush_dcache();
 107         invalidate_icache();
 108
 109         set_liodns();
 110         setup_portals();
 111
 112         ret = trigger_fpga_config();
 113         if (ret)
 114                 printf("error triggering PCIe FPGA config\n");
 115
 116         /* enable the Unit LED (red) & Boot LED (on) */
 117         qrio_set_leds();
 118
 119         return ret;
 120 }
 121
 122 unsigned long get_board_sys_clk(unsigned long dummy)
 123 {
 124         return 66666666;
 125 }
 126
 127 int misc_init_f(void)
 128 {
 129         /* configure QRIO pis for i2c deblocking */
 130         i2c_deblock_gpio_cfg();
 131
 132         return 0;
 133 }
 134
 135 #define NUM_SRDS_BANKS  2
 136 #define PHY_RST         15
 137
 138 int misc_init_r(void)
 139 {
 140         serdes_corenet_t *regs = (void *)CONFIG_SYS_FSL_CORENET_SERDES_ADDR;
 141         u32 expected[NUM_SRDS_BANKS] = {SRDS_PLLCR0_RFCK_SEL_100,
 142                 SRDS_PLLCR0_RFCK_SEL_125};
 143         unsigned int i;
 144
 145         /* check SERDES reference clocks */
 146         for (i = 0; i < NUM_SRDS_BANKS; i++) {
 147                 u32 actual = in_be32(&regs->bank[i].pllcr0);
 148                 actual &= SRDS_PLLCR0_RFCK_SEL_MASK;
 149                 if (actual != expected[i]) {
 150                         printf("Warning: SERDES bank %u expects reference \
 151                                clock %sMHz, but actual is %sMHz\n", i + 1,
 152                                serdes_clock_to_string(expected[i]),
 153                                serdes_clock_to_string(actual));
 154                 }
 155         }
 156
 157         /* take the mgmt eth phy out of reset */
 158         qrio_prst(PHY_RST, false, false);
 159
 160         return 0;
 161 }
 162
 163 #if defined(CONFIG_HUSH_INIT_VAR)
 164 int hush_init_var(void)
 165 {
 166         ivm_read_eeprom();
 167         return 0;
 168 }
 169 #endif
 170
 171 #if defined(CONFIG_LAST_STAGE_INIT)
 172 int last_stage_init(void)
 173 {
 174         set_km_env();
 175         return 0;
 176 }
 177 #endif
 178
 179 #ifdef CONFIG_SYS_DPAA_FMAN
 180 void fdt_fixup_fman_mac_addresses(void *blob)
 181 {
 182         int node, i, ret;
 183         char *tmp, *end;
 184         unsigned char mac_addr[6];
 185
 186         /* get the mac addr from env */
 187         tmp = getenv("ethaddr");
 188         if (!tmp) {
 189                 printf("ethaddr env variable not defined\n");
 190                 return;
 191         }
 192         for (i = 0; i < 6; i++) {
 193                 mac_addr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
 194                 if (tmp)
 195                         tmp = (*end) ? end+1 : end;
 196         }
 197
 198         /* find the correct fdt ethernet path and correct it */
 199         node = fdt_path_offset(blob, "/soc/fman/ethernet@e8000");
 200         if (node < 0) {
 201                 printf("no /soc/fman/ethernet path offset\n");
 202                 return;
 203         }
 204         ret = fdt_setprop(blob, node, "local-mac-address", &mac_addr, 6);
 205         if (ret) {
 206                 printf("error setting local-mac-address property\n");
 207                 return;
 208         }
 209 }
 210 #endif
 211
 212 void ft_board_setup(void *blob, bd_t *bd)
 213 {
 214         phys_addr_t base;
 215         phys_size_t size;
 216
 217         ft_cpu_setup(blob, bd);
 218
 219         base = getenv_bootm_low();
 220         size = getenv_bootm_size();
 221
 222         fdt_fixup_memory(blob, (u64)base, (u64)size);
 223
 224 #if defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB)
 225         fdt_fixup_dr_usb(blob, bd);
 226 #endif
 227
 228 #ifdef CONFIG_PCI
 229         pci_of_setup(blob, bd);
 230 #endif
 231
 232         fdt_fixup_liodn(blob);
 233 #ifdef CONFIG_SYS_DPAA_FMAN
 234         fdt_fixup_fman_ethernet(blob);
 235         fdt_fixup_fman_mac_addresses(blob);
 236 #endif
 237 }