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 23 static bd_t bd; 24 25 #define NUM_REGS 3 26 27 static 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 } 133 134 void 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