board/exmeritus/hww1u1a/hww1u1a.c

   1 /*
   2  * Copyright 2009-2011 eXMeritus, A Boeing Company
   3  * Copyright 2007-2009 Freescale Semiconductor, Inc.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <command.h>
  10 #include <pci.h>
  11 #include <asm/processor.h>
  12 #include <asm/mmu.h>
  13 #include <asm/cache.h>
  14 #include <asm/immap_85xx.h>
  15 #include <asm/fsl_pci.h>
  16 #include <fsl_ddr_sdram.h>
  17 #include <asm/io.h>
  18 #include <miiphy.h>
  19 #include <libfdt.h>
  20 #include <linux/ctype.h>
  21 #include <fdt_support.h>
  22 #include <fsl_mdio.h>
  23 #include <tsec.h>
  24 #include <asm/fsl_law.h>
  25 #include <netdev.h>
  26 #include <malloc.h>
  27 #include <i2c.h>
  28 #include <pca953x.h>
  29
  30 #include "gpios.h"
  31
  32 DECLARE_GLOBAL_DATA_PTR;
  33
  34 int checkboard(void)
  35 {
  36         unsigned int gpio_high = 0;
  37         unsigned int gpio_low  = 0;
  38         unsigned int gpio_in   = 0;
  39         unsigned int i;
  40         struct ccsr_ddr __iomem *ddr;
  41
  42         puts("Board: HWW-1U-1A ");
  43
  44         /*
  45          * First just figure out which CPU we're on, then use that to
  46          * configure the lists of other GPIOs to be programmed.
  47          */
  48         mpc85xx_gpio_set_in(GPIO_CPU_ID);
  49         if (hww1u1a_is_cpu_a()) {
  50                 puts("CPU A\n");
  51
  52                 /* We want to turn on some LEDs */
  53                 gpio_high |= GPIO_CPUA_CPU_READY;
  54                 gpio_low  |= GPIO_CPUA_DEBUG_LED1;
  55                 gpio_low  |= GPIO_CPUA_DEBUG_LED2;
  56
  57                 /* Disable the unused transmitters */
  58                 gpio_low  |= GPIO_CPUA_TDIS1A;
  59                 gpio_high |= GPIO_CPUA_TDIS1B;
  60                 gpio_low  |= GPIO_CPUA_TDIS2A;
  61                 gpio_high |= GPIO_CPUA_TDIS2B;
  62         } else {
  63                 puts("CPU B\n");
  64
  65                 /* We want to turn on some LEDs */
  66                 gpio_high |= GPIO_CPUB_CPU_READY;
  67                 gpio_low  |= GPIO_CPUB_DEBUG_LED1;
  68                 gpio_low  |= GPIO_CPUB_DEBUG_LED2;
  69
  70                 /* Enable the appropriate receivers */
  71                 gpio_high |= GPIO_CPUB_RMUX_SEL0A;
  72                 gpio_high |= GPIO_CPUB_RMUX_SEL0B;
  73                 gpio_low  |= GPIO_CPUB_RMUX_SEL1A;
  74                 gpio_low  |= GPIO_CPUB_RMUX_SEL1B;
  75         }
  76
  77         /* These GPIOs are common */
  78         gpio_in   |= IRQ_I2CINT | IRQ_FANINT | IRQ_DIMM_EVENT;
  79         gpio_low  |= GPIO_RS422_RE;
  80         gpio_high |= GPIO_RS422_DE;
  81
  82         /* Ok, now go ahead and program all of those in one go */
  83         mpc85xx_gpio_set(gpio_high|gpio_low|gpio_in,
  84                          gpio_high|gpio_low,
  85                          gpio_high);
  86
  87         /*
  88          * If things have been taken out of reset early (for example, by one
  89          * of the BDI3000 debuggers), then we need to put them back in reset
  90          * and delay a while before we continue.
  91          */
  92         if (mpc85xx_gpio_get(GPIO_RESETS)) {
  93                 ddr = (struct ccsr_ddr __iomem *)CONFIG_SYS_FSL_DDR_ADDR;
  94
  95                 puts("Debugger detected... extra device reset enabled!\n");
  96
  97                 /* Put stuff into reset and disable the DDR controller */
  98                 mpc85xx_gpio_set_low(GPIO_RESETS);
  99                 out_be32(&ddr->sdram_cfg, 0x00000000);
 100
 101                 puts("    Waiting 1 sec for reset...");
 102                 for (i = 0; i < 10; i++) {
 103                         udelay(100000);
 104                         puts(".");
 105                 }
 106                 puts("\n");
 107         }
 108
 109         /* Now bring everything back out of reset again */
 110         mpc85xx_gpio_set_high(GPIO_RESETS);
 111         return 0;
 112 }
 113
 114 /*
 115  * This little shell function just returns whether or not it's CPU A.
 116  * It can be used to select the right device-tree when booting, etc.
 117  */
 118 int do_hww1u1a_test_cpu_a(cmd_tbl_t *cmdtp, int flag,
 119                 int argc, char * const argv[])
 120 {
 121         if (argc > 1)
 122                 cmd_usage(cmdtp);
 123
 124         if (hww1u1a_is_cpu_a())
 125                 return 0;
 126         else
 127                 return 1;
 128 }
 129 U_BOOT_CMD(
 130         test_cpu_a, 1, 0, do_hww1u1a_test_cpu_a,
 131         "Test if this is CPU A (versus B) on the eXMeritus HWW-1U-1A board",
 132         ""
 133 );
 134
 135 /* Create a prompt-like string: "uboot@HOSTNAME% " */
 136 #define PROMPT_PREFIX "uboot@exm"
 137 #define PROMPT_SUFFIX "% "
 138
 139 /* This function returns a PS1 prompt based on the serial number */
 140 static char *hww1u1a_prompt;
 141 const char *hww1u1a_get_ps1(void)
 142 {
 143         unsigned long len, i, j;
 144         const char *serialnr;
 145
 146         /* If our prompt was already set, just use that */
 147         if (hww1u1a_prompt)
 148                 return hww1u1a_prompt;
 149
 150         /* Use our serial number if present, otherwise a default */
 151         serialnr = getenv("serial#");
 152         if (!serialnr || !serialnr[0])
 153                 serialnr = "999999-X";
 154
 155         /*
 156          * We will turn the serial number into a hostname by:
 157          *   (A) Delete all non-alphanumerics.
 158          *   (B) Lowercase all letters.
 159          *   (C) Prefix "exm".
 160          *   (D) Suffix "a" for CPU A and "b" for CPU B.
 161          */
 162         for (i = 0, len = 0; serialnr[i]; i++) {
 163                 if (isalnum(serialnr[i]))
 164                         len++;
 165         }
 166
 167         len += sizeof(PROMPT_PREFIX PROMPT_SUFFIX) + 1; /* Includes NUL */
 168         hww1u1a_prompt = malloc(len);
 169         if (!hww1u1a_prompt)
 170                 return PROMPT_PREFIX "UNKNOWN(ENOMEM)" PROMPT_SUFFIX;
 171
 172         /* Now actually fill it in */
 173         i = 0;
 174
 175         /* Handle the prefix */
 176         for (j = 0; j < sizeof(PROMPT_PREFIX) - 1; j++)
 177                 hww1u1a_prompt[i++] = PROMPT_PREFIX[j];
 178
 179         /* Now the serial# part of the hostname */
 180         for (j = 0; serialnr[j]; j++)
 181                 if (isalnum(serialnr[j]))
 182                         hww1u1a_prompt[i++] = tolower(serialnr[j]);
 183
 184         /* Now the CPU id ("a" or "b") */
 185         hww1u1a_prompt[i++] = hww1u1a_is_cpu_a() ? 'a' : 'b';
 186
 187         /* Finally the suffix */
 188         for (j = 0; j < sizeof(PROMPT_SUFFIX); j++)
 189                 hww1u1a_prompt[i++] = PROMPT_SUFFIX[j];
 190
 191         /* This should all have added up, but just in case */
 192         hww1u1a_prompt[len - 1] = '\0';
 193
 194         /* Now we're done */
 195         return hww1u1a_prompt;
 196 }
 197
 198 void pci_init_board(void)
 199 {
 200         fsl_pcie_init_board(0);
 201 }
 202
 203 int board_early_init_r(void)
 204 {
 205         const unsigned int flashbase = CONFIG_SYS_FLASH_BASE;
 206         const u8 flash_esel = find_tlb_idx((void *)flashbase, 1);
 207
 208         /*
 209          * Remap bootflash region to caching-inhibited
 210          * so that flash can be erased properly.
 211          */
 212
 213         /* Flush d-cache and invalidate i-cache of any FLASH data */
 214         flush_dcache();
 215         invalidate_icache();
 216
 217         /* invalidate existing TLB entry for FLASH */
 218         disable_tlb(flash_esel);
 219
 220         set_tlb(1, flashbase, CONFIG_SYS_FLASH_BASE_PHYS,
 221                         MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 222                         0, flash_esel, BOOKE_PAGESZ_256M, 1);
 223
 224         return 0;
 225 }
 226
 227 int board_eth_init(bd_t *bis)
 228 {
 229         struct tsec_info_struct tsec_info[4];
 230         struct fsl_pq_mdio_info mdio_info;
 231
 232         SET_STD_TSEC_INFO(tsec_info[0], 1);
 233         SET_STD_TSEC_INFO(tsec_info[1], 2);
 234         SET_STD_TSEC_INFO(tsec_info[2], 3);
 235
 236         if (hww1u1a_is_cpu_a())
 237                 tsec_info[2].phyaddr = TSEC3_PHY_ADDR_CPUA;
 238         else
 239                 tsec_info[2].phyaddr = TSEC3_PHY_ADDR_CPUB;
 240
 241         mdio_info.regs = (struct tsec_mii_mng *)CONFIG_SYS_MDIO_BASE_ADDR;
 242         mdio_info.name = DEFAULT_MII_NAME;
 243         fsl_pq_mdio_init(bis, &mdio_info);
 244
 245         tsec_eth_init(bis, tsec_info, 3);
 246         return pci_eth_init(bis);
 247 }
 248
 249 void ft_board_setup(void *blob, bd_t *bd)
 250 {
 251         phys_addr_t base;
 252         phys_size_t size;
 253
 254         ft_cpu_setup(blob, bd);
 255
 256         base = getenv_bootm_low();
 257         size = getenv_bootm_size();
 258
 259         fdt_fixup_memory(blob, (u64)base, (u64)size);
 260
 261         FT_FSL_PCI_SETUP;
 262 }