Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 | // SPDX-License-Identifier: GPL-2.0-only /* * Old U-boot compatibility for Esteem 195E Hotfoot CPU Board * * Author: Solomon Peachy <solomon@linux-wlan.com> */ #include "ops.h" #include "stdio.h" #include "reg.h" #include "dcr.h" #include "4xx.h" #include "cuboot.h" #define TARGET_4xx #define TARGET_HOTFOOT #include "ppcboot-hotfoot.h" static bd_t bd; #define NUM_REGS 3 static void hotfoot_fixups(void) { u32 uart = mfdcr(DCRN_CPC0_UCR) & 0x7f; dt_fixup_memory(bd.bi_memstart, bd.bi_memsize); dt_fixup_cpu_clocks(bd.bi_procfreq, bd.bi_procfreq, 0); dt_fixup_clock("/plb", bd.bi_plb_busfreq); dt_fixup_clock("/plb/opb", bd.bi_opbfreq); dt_fixup_clock("/plb/ebc", bd.bi_pci_busfreq); dt_fixup_clock("/plb/opb/serial@ef600300", bd.bi_procfreq / uart); dt_fixup_clock("/plb/opb/serial@ef600400", bd.bi_procfreq / uart); dt_fixup_mac_address_by_alias("ethernet0", bd.bi_enetaddr); dt_fixup_mac_address_by_alias("ethernet1", bd.bi_enet1addr); /* Is this a single eth/serial board? */ if ((bd.bi_enet1addr[0] == 0) && (bd.bi_enet1addr[1] == 0) && (bd.bi_enet1addr[2] == 0) && (bd.bi_enet1addr[3] == 0) && (bd.bi_enet1addr[4] == 0) && (bd.bi_enet1addr[5] == 0)) { void *devp; printf("Trimming devtree for single serial/eth board\n"); devp = finddevice("/plb/opb/serial@ef600300"); if (!devp) fatal("Can't find node for /plb/opb/serial@ef600300"); del_node(devp); devp = finddevice("/plb/opb/ethernet@ef600900"); if (!devp) fatal("Can't find node for /plb/opb/ethernet@ef600900"); del_node(devp); } ibm4xx_quiesce_eth((u32 *)0xef600800, (u32 *)0xef600900); /* Fix up flash size in fdt for 4M boards. */ if (bd.bi_flashsize < 0x800000) { u32 regs[NUM_REGS]; void *devp = finddevice("/plb/ebc/nor_flash@0"); if (!devp) fatal("Can't find FDT node for nor_flash!??"); printf("Fixing devtree for 4M Flash\n"); /* First fix up the base address */ getprop(devp, "reg", regs, sizeof(regs)); regs[0] = 0; regs[1] = 0xffc00000; regs[2] = 0x00400000; setprop(devp, "reg", regs, sizeof(regs)); /* Then the offsets */ devp = finddevice("/plb/ebc/nor_flash@0/partition@0"); if (!devp) fatal("Can't find FDT node for partition@0"); getprop(devp, "reg", regs, 2*sizeof(u32)); regs[0] -= 0x400000; setprop(devp, "reg", regs, 2*sizeof(u32)); devp = finddevice("/plb/ebc/nor_flash@0/partition@1"); if (!devp) fatal("Can't find FDT node for partition@1"); getprop(devp, "reg", regs, 2*sizeof(u32)); regs[0] -= 0x400000; setprop(devp, "reg", regs, 2*sizeof(u32)); devp = finddevice("/plb/ebc/nor_flash@0/partition@2"); if (!devp) fatal("Can't find FDT node for partition@2"); getprop(devp, "reg", regs, 2*sizeof(u32)); regs[0] -= 0x400000; setprop(devp, "reg", regs, 2*sizeof(u32)); devp = finddevice("/plb/ebc/nor_flash@0/partition@3"); if (!devp) fatal("Can't find FDT node for partition@3"); getprop(devp, "reg", regs, 2*sizeof(u32)); regs[0] -= 0x400000; setprop(devp, "reg", regs, 2*sizeof(u32)); devp = finddevice("/plb/ebc/nor_flash@0/partition@4"); if (!devp) fatal("Can't find FDT node for partition@4"); getprop(devp, "reg", regs, 2*sizeof(u32)); regs[0] -= 0x400000; setprop(devp, "reg", regs, 2*sizeof(u32)); devp = finddevice("/plb/ebc/nor_flash@0/partition@6"); if (!devp) fatal("Can't find FDT node for partition@6"); getprop(devp, "reg", regs, 2*sizeof(u32)); regs[0] -= 0x400000; setprop(devp, "reg", regs, 2*sizeof(u32)); /* Delete the FeatFS node */ devp = finddevice("/plb/ebc/nor_flash@0/partition@5"); if (!devp) fatal("Can't find FDT node for partition@5"); del_node(devp); } } void platform_init(unsigned long r3, unsigned long r4, unsigned long r5, unsigned long r6, unsigned long r7) { CUBOOT_INIT(); platform_ops.fixups = hotfoot_fixups; platform_ops.exit = ibm40x_dbcr_reset; fdt_init(_dtb_start); serial_console_init(); } |