LXR linux/arch/powerpc/boot/cuboot-hotfoot.c

   1/*
   2 * Old U-boot compatibility for Esteem 195E Hotfoot CPU Board
   3 *
   4 * Author: Solomon Peachy <solomon@linux-wlan.com>
   5 *
   6 * This program is free software; you can redistribute it and/or modify it
   7 * under the terms of the GNU General Public License version 2 as published
   8 * by the Free Software Foundation.
   9 */
  10
  11#include "ops.h"
  12#include "stdio.h"
  13#include "reg.h"
  14#include "dcr.h"
  15#include "4xx.h"
  16#include "cuboot.h"
  17
  18#define TARGET_4xx
  19#define TARGET_HOTFOOT
  20
  21#include "ppcboot-hotfoot.h"
  22
  23static bd_t bd;
  24
  25#define NUM_REGS 3
  26
  27static void hotfoot_fixups(void)
  28{
  29        u32 uart = mfdcr(DCRN_CPC0_UCR) & 0x7f;
  30
  31        dt_fixup_memory(bd.bi_memstart, bd.bi_memsize); 
  32
  33        dt_fixup_cpu_clocks(bd.bi_procfreq, bd.bi_procfreq, 0);
  34        dt_fixup_clock("/plb", bd.bi_plb_busfreq);
  35        dt_fixup_clock("/plb/opb", bd.bi_opbfreq);
  36        dt_fixup_clock("/plb/ebc", bd.bi_pci_busfreq);
  37        dt_fixup_clock("/plb/opb/serial@ef600300", bd.bi_procfreq / uart); 
  38        dt_fixup_clock("/plb/opb/serial@ef600400", bd.bi_procfreq / uart); 
  39        
  40        dt_fixup_mac_address_by_alias("ethernet0", bd.bi_enetaddr);
  41        dt_fixup_mac_address_by_alias("ethernet1", bd.bi_enet1addr);
  42
  43        /* Is this a single eth/serial board? */
  44        if ((bd.bi_enet1addr[0] == 0) && 
  45            (bd.bi_enet1addr[1] == 0) &&
  46            (bd.bi_enet1addr[2] == 0) &&
  47            (bd.bi_enet1addr[3] == 0) &&
  48            (bd.bi_enet1addr[4] == 0) &&
  49            (bd.bi_enet1addr[5] == 0)) {
  50                void *devp;
  51
  52                printf("Trimming devtree for single serial/eth board\n");
  53
  54                devp = finddevice("/plb/opb/serial@ef600300");
  55                if (!devp)
  56                        fatal("Can't find node for /plb/opb/serial@ef600300");
  57                del_node(devp);
  58
  59                devp = finddevice("/plb/opb/ethernet@ef600900");
  60                if (!devp)
  61                        fatal("Can't find node for /plb/opb/ethernet@ef600900");
  62                del_node(devp);
  63        }
  64
  65        ibm4xx_quiesce_eth((u32 *)0xef600800, (u32 *)0xef600900);
  66
  67        /* Fix up flash size in fdt for 4M boards. */
  68        if (bd.bi_flashsize < 0x800000) {
  69                u32 regs[NUM_REGS];
  70                void *devp = finddevice("/plb/ebc/nor_flash@0");
  71                if (!devp)
  72                        fatal("Can't find FDT node for nor_flash!??");
  73
  74                printf("Fixing devtree for 4M Flash\n");
  75                
  76                /* First fix up the base addresse */
  77                getprop(devp, "reg", regs, sizeof(regs));
  78                regs[0] = 0;
  79                regs[1] = 0xffc00000;
  80                regs[2] = 0x00400000;
  81                setprop(devp, "reg", regs, sizeof(regs));
  82                
  83                /* Then the offsets */
  84                devp = finddevice("/plb/ebc/nor_flash@0/partition@0");
  85                if (!devp)
  86                        fatal("Can't find FDT node for partition@0");
  87                getprop(devp, "reg", regs, 2*sizeof(u32));
  88                regs[0] -= 0x400000;
  89                setprop(devp, "reg", regs,  2*sizeof(u32));
  90
  91                devp = finddevice("/plb/ebc/nor_flash@0/partition@1");
  92                if (!devp)
  93                        fatal("Can't find FDT node for partition@1");
  94                getprop(devp, "reg", regs, 2*sizeof(u32));
  95                regs[0] -= 0x400000;
  96                setprop(devp, "reg", regs,  2*sizeof(u32));
  97
  98                devp = finddevice("/plb/ebc/nor_flash@0/partition@2");
  99                if (!devp)
 100                        fatal("Can't find FDT node for partition@2");
 101                getprop(devp, "reg", regs, 2*sizeof(u32));
 102                regs[0] -= 0x400000;
 103                setprop(devp, "reg", regs,  2*sizeof(u32));
 104
 105                devp = finddevice("/plb/ebc/nor_flash@0/partition@3");
 106                if (!devp)
 107                        fatal("Can't find FDT node for partition@3");
 108                getprop(devp, "reg", regs, 2*sizeof(u32));
 109                regs[0] -= 0x400000;
 110                setprop(devp, "reg", regs,  2*sizeof(u32));
 111
 112                devp = finddevice("/plb/ebc/nor_flash@0/partition@4");
 113                if (!devp)
 114                        fatal("Can't find FDT node for partition@4");
 115                getprop(devp, "reg", regs, 2*sizeof(u32));
 116                regs[0] -= 0x400000;
 117                setprop(devp, "reg", regs,  2*sizeof(u32));
 118
 119                devp = finddevice("/plb/ebc/nor_flash@0/partition@6");
 120                if (!devp)
 121                        fatal("Can't find FDT node for partition@6");
 122                getprop(devp, "reg", regs, 2*sizeof(u32));
 123                regs[0] -= 0x400000;
 124                setprop(devp, "reg", regs,  2*sizeof(u32));
 125
 126                /* Delete the FeatFS node */
 127                devp = finddevice("/plb/ebc/nor_flash@0/partition@5");
 128                if (!devp)
 129                        fatal("Can't find FDT node for partition@5");
 130                del_node(devp);
 131        }
 132}
 133
 134void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 135                   unsigned long r6, unsigned long r7)
 136{
 137        CUBOOT_INIT();
 138        platform_ops.fixups = hotfoot_fixups;
 139        platform_ops.exit = ibm40x_dbcr_reset;
 140        fdt_init(_dtb_start);
 141        serial_console_init();
 142}
 143