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139 lines
3.9 KiB
139 lines
3.9 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Old U-boot compatibility for Esteem 195E Hotfoot CPU Board |
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* |
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* Author: Solomon Peachy <[email protected]> |
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*/ |
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#include "ops.h" |
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#include "stdio.h" |
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#include "reg.h" |
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#include "dcr.h" |
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#include "4xx.h" |
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#include "cuboot.h" |
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#define TARGET_4xx |
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#define TARGET_HOTFOOT |
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#include "ppcboot-hotfoot.h" |
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static bd_t bd; |
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#define NUM_REGS 3 |
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static void hotfoot_fixups(void) |
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{ |
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u32 uart = mfdcr(DCRN_CPC0_UCR) & 0x7f; |
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dt_fixup_memory(bd.bi_memstart, bd.bi_memsize); |
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dt_fixup_cpu_clocks(bd.bi_procfreq, bd.bi_procfreq, 0); |
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dt_fixup_clock("/plb", bd.bi_plb_busfreq); |
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dt_fixup_clock("/plb/opb", bd.bi_opbfreq); |
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dt_fixup_clock("/plb/ebc", bd.bi_pci_busfreq); |
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dt_fixup_clock("/plb/opb/serial@ef600300", bd.bi_procfreq / uart); |
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dt_fixup_clock("/plb/opb/serial@ef600400", bd.bi_procfreq / uart); |
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dt_fixup_mac_address_by_alias("ethernet0", bd.bi_enetaddr); |
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dt_fixup_mac_address_by_alias("ethernet1", bd.bi_enet1addr); |
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/* Is this a single eth/serial board? */ |
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if ((bd.bi_enet1addr[0] == 0) && |
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(bd.bi_enet1addr[1] == 0) && |
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(bd.bi_enet1addr[2] == 0) && |
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(bd.bi_enet1addr[3] == 0) && |
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(bd.bi_enet1addr[4] == 0) && |
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(bd.bi_enet1addr[5] == 0)) { |
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void *devp; |
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printf("Trimming devtree for single serial/eth board\n"); |
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devp = finddevice("/plb/opb/serial@ef600300"); |
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if (!devp) |
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fatal("Can't find node for /plb/opb/serial@ef600300"); |
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del_node(devp); |
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devp = finddevice("/plb/opb/ethernet@ef600900"); |
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if (!devp) |
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fatal("Can't find node for /plb/opb/ethernet@ef600900"); |
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del_node(devp); |
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} |
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ibm4xx_quiesce_eth((u32 *)0xef600800, (u32 *)0xef600900); |
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/* Fix up flash size in fdt for 4M boards. */ |
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if (bd.bi_flashsize < 0x800000) { |
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u32 regs[NUM_REGS]; |
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void *devp = finddevice("/plb/ebc/nor_flash@0"); |
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if (!devp) |
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fatal("Can't find FDT node for nor_flash!??"); |
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printf("Fixing devtree for 4M Flash\n"); |
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/* First fix up the base addresse */ |
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getprop(devp, "reg", regs, sizeof(regs)); |
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regs[0] = 0; |
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regs[1] = 0xffc00000; |
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regs[2] = 0x00400000; |
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setprop(devp, "reg", regs, sizeof(regs)); |
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/* Then the offsets */ |
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devp = finddevice("/plb/ebc/nor_flash@0/partition@0"); |
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if (!devp) |
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fatal("Can't find FDT node for partition@0"); |
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getprop(devp, "reg", regs, 2*sizeof(u32)); |
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regs[0] -= 0x400000; |
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setprop(devp, "reg", regs, 2*sizeof(u32)); |
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devp = finddevice("/plb/ebc/nor_flash@0/partition@1"); |
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if (!devp) |
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fatal("Can't find FDT node for partition@1"); |
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getprop(devp, "reg", regs, 2*sizeof(u32)); |
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regs[0] -= 0x400000; |
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setprop(devp, "reg", regs, 2*sizeof(u32)); |
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devp = finddevice("/plb/ebc/nor_flash@0/partition@2"); |
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if (!devp) |
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fatal("Can't find FDT node for partition@2"); |
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getprop(devp, "reg", regs, 2*sizeof(u32)); |
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regs[0] -= 0x400000; |
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setprop(devp, "reg", regs, 2*sizeof(u32)); |
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devp = finddevice("/plb/ebc/nor_flash@0/partition@3"); |
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if (!devp) |
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fatal("Can't find FDT node for partition@3"); |
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getprop(devp, "reg", regs, 2*sizeof(u32)); |
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regs[0] -= 0x400000; |
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setprop(devp, "reg", regs, 2*sizeof(u32)); |
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devp = finddevice("/plb/ebc/nor_flash@0/partition@4"); |
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if (!devp) |
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fatal("Can't find FDT node for partition@4"); |
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getprop(devp, "reg", regs, 2*sizeof(u32)); |
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regs[0] -= 0x400000; |
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setprop(devp, "reg", regs, 2*sizeof(u32)); |
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devp = finddevice("/plb/ebc/nor_flash@0/partition@6"); |
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if (!devp) |
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fatal("Can't find FDT node for partition@6"); |
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getprop(devp, "reg", regs, 2*sizeof(u32)); |
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regs[0] -= 0x400000; |
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setprop(devp, "reg", regs, 2*sizeof(u32)); |
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/* Delete the FeatFS node */ |
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devp = finddevice("/plb/ebc/nor_flash@0/partition@5"); |
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if (!devp) |
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fatal("Can't find FDT node for partition@5"); |
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del_node(devp); |
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} |
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} |
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void platform_init(unsigned long r3, unsigned long r4, unsigned long r5, |
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unsigned long r6, unsigned long r7) |
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{ |
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CUBOOT_INIT(); |
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platform_ops.fixups = hotfoot_fixups; |
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platform_ops.exit = ibm40x_dbcr_reset; |
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fdt_init(_dtb_start); |
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serial_console_init(); |
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}
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