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git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - arch/powerpc/boot/treeboot-walnut.c
2 * Old U-boot compatibility for Walnut
4 * Author: Josh Boyer <jwboyer@linux.vnet.ibm.com>
6 * Copyright 2007 IBM Corporation
7 * Based on cuboot-83xx.c, which is:
8 * Copyright (c) 2007 Freescale Semiconductor, Inc.
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License version 2 as published
12 * by the Free Software Foundation.
23 static void walnut_flashsel_fixup(void)
26 u32 reg_flash
[3] = {0x0, 0x0, 0x80000};
27 u32 reg_sram
[3] = {0x0, 0x0, 0x80000};
31 devp
= finddevice("/plb/ebc/fpga");
33 fatal("Couldn't locate FPGA node\n\r");
35 if (getprop(devp
, "virtual-reg", &fpga
, sizeof(fpga
)) != sizeof(fpga
))
36 fatal("no virtual-reg property\n\r");
38 fpga_brds1
= in_8(fpga
);
40 devp
= finddevice("/plb/ebc/flash");
42 fatal("Couldn't locate flash node\n\r");
44 if (getprop(devp
, "reg", reg_flash
, sizeof(reg_flash
)) != sizeof(reg_flash
))
45 fatal("flash reg property has unexpected size\n\r");
47 sram
= finddevice("/plb/ebc/sram");
49 fatal("Couldn't locate sram node\n\r");
51 if (getprop(sram
, "reg", reg_sram
, sizeof(reg_sram
)) != sizeof(reg_sram
))
52 fatal("sram reg property has unexpected size\n\r");
54 if (fpga_brds1
& 0x1) {
55 reg_flash
[1] ^= 0x80000;
56 reg_sram
[1] ^= 0x80000;
59 setprop(devp
, "reg", reg_flash
, sizeof(reg_flash
));
60 setprop(sram
, "reg", reg_sram
, sizeof(reg_sram
));
63 #define WALNUT_OPENBIOS_MAC_OFF 0xfffffe0b
64 static void walnut_fixups(void)
66 ibm4xx_sdram_fixup_memsize();
67 ibm405gp_fixup_clocks(33330000, 0xa8c000);
68 ibm4xx_quiesce_eth((u32
*)0xef600800, NULL
);
69 ibm4xx_fixup_ebc_ranges("/plb/ebc");
70 walnut_flashsel_fixup();
71 dt_fixup_mac_addresses((u8
*) WALNUT_OPENBIOS_MAC_OFF
);
74 void platform_init(void)
76 unsigned long end_of_ram
= 0x2000000;
77 unsigned long avail_ram
= end_of_ram
- (unsigned long) _end
;
79 simple_alloc_init(_end
, avail_ram
, 32, 32);
80 platform_ops
.fixups
= walnut_fixups
;
81 platform_ops
.exit
= ibm40x_dbcr_reset
;
83 serial_console_init();