140 lines
3.9 KiB
C
140 lines
3.9 KiB
C
// 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 <solomon@linux-wlan.com>
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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 address */
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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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