cuboot-hotfoot.c
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/*
* Old U-boot compatibility for Esteem 195E Hotfoot CPU Board
*
* Author: Solomon Peachy <solomon@linux-wlan.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#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 addresse */
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();
}