1/*
2 * Old U-boot compatibility for Esteem 195E Hotfoot CPU Board
3 *
4 * Author: Solomon Peachy <solomon@linux-wlan.com>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation.
9 */
10
11#include "ops.h"
12#include "stdio.h"
13#include "reg.h"
14#include "dcr.h"
15#include "4xx.h"
16#include "cuboot.h"
17
18#define TARGET_4xx
19#define TARGET_HOTFOOT
20
21#include "ppcboot-hotfoot.h"
22
23static bd_t bd;
24
25#define NUM_REGS 3
26
27static void hotfoot_fixups(void)
28{
29	u32 uart = mfdcr(DCRN_CPC0_UCR) & 0x7f;
30
31	dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
32
33	dt_fixup_cpu_clocks(bd.bi_procfreq, bd.bi_procfreq, 0);
34	dt_fixup_clock("/plb", bd.bi_plb_busfreq);
35	dt_fixup_clock("/plb/opb", bd.bi_opbfreq);
36	dt_fixup_clock("/plb/ebc", bd.bi_pci_busfreq);
37	dt_fixup_clock("/plb/opb/serial@ef600300", bd.bi_procfreq / uart);
38	dt_fixup_clock("/plb/opb/serial@ef600400", bd.bi_procfreq / uart);
39
40	dt_fixup_mac_address_by_alias("ethernet0", bd.bi_enetaddr);
41	dt_fixup_mac_address_by_alias("ethernet1", bd.bi_enet1addr);
42
43	/* Is this a single eth/serial board? */
44	if ((bd.bi_enet1addr[0] == 0) &&
45	    (bd.bi_enet1addr[1] == 0) &&
46	    (bd.bi_enet1addr[2] == 0) &&
47	    (bd.bi_enet1addr[3] == 0) &&
48	    (bd.bi_enet1addr[4] == 0) &&
49	    (bd.bi_enet1addr[5] == 0)) {
50		void *devp;
51
52		printf("Trimming devtree for single serial/eth board\n");
53
54		devp = finddevice("/plb/opb/serial@ef600300");
55		if (!devp)
56			fatal("Can't find node for /plb/opb/serial@ef600300");
57		del_node(devp);
58
59		devp = finddevice("/plb/opb/ethernet@ef600900");
60		if (!devp)
61			fatal("Can't find node for /plb/opb/ethernet@ef600900");
62		del_node(devp);
63	}
64
65	ibm4xx_quiesce_eth((u32 *)0xef600800, (u32 *)0xef600900);
66
67	/* Fix up flash size in fdt for 4M boards. */
68	if (bd.bi_flashsize < 0x800000) {
69		u32 regs[NUM_REGS];
70		void *devp = finddevice("/plb/ebc/nor_flash@0");
71		if (!devp)
72			fatal("Can't find FDT node for nor_flash!??");
73
74		printf("Fixing devtree for 4M Flash\n");
75
76		/* First fix up the base addresse */
77		getprop(devp, "reg", regs, sizeof(regs));
78		regs[0] = 0;
79		regs[1] = 0xffc00000;
80		regs[2] = 0x00400000;
81		setprop(devp, "reg", regs, sizeof(regs));
82
83		/* Then the offsets */
84		devp = finddevice("/plb/ebc/nor_flash@0/partition@0");
85		if (!devp)
86			fatal("Can't find FDT node for partition@0");
87		getprop(devp, "reg", regs, 2*sizeof(u32));
88		regs[0] -= 0x400000;
89		setprop(devp, "reg", regs,  2*sizeof(u32));
90
91		devp = finddevice("/plb/ebc/nor_flash@0/partition@1");
92		if (!devp)
93			fatal("Can't find FDT node for partition@1");
94		getprop(devp, "reg", regs, 2*sizeof(u32));
95		regs[0] -= 0x400000;
96		setprop(devp, "reg", regs,  2*sizeof(u32));
97
98		devp = finddevice("/plb/ebc/nor_flash@0/partition@2");
99		if (!devp)
100			fatal("Can't find FDT node for partition@2");
101		getprop(devp, "reg", regs, 2*sizeof(u32));
102		regs[0] -= 0x400000;
103		setprop(devp, "reg", regs,  2*sizeof(u32));
104
105		devp = finddevice("/plb/ebc/nor_flash@0/partition@3");
106		if (!devp)
107			fatal("Can't find FDT node for partition@3");
108		getprop(devp, "reg", regs, 2*sizeof(u32));
109		regs[0] -= 0x400000;
110		setprop(devp, "reg", regs,  2*sizeof(u32));
111
112		devp = finddevice("/plb/ebc/nor_flash@0/partition@4");
113		if (!devp)
114			fatal("Can't find FDT node for partition@4");
115		getprop(devp, "reg", regs, 2*sizeof(u32));
116		regs[0] -= 0x400000;
117		setprop(devp, "reg", regs,  2*sizeof(u32));
118
119		devp = finddevice("/plb/ebc/nor_flash@0/partition@6");
120		if (!devp)
121			fatal("Can't find FDT node for partition@6");
122		getprop(devp, "reg", regs, 2*sizeof(u32));
123		regs[0] -= 0x400000;
124		setprop(devp, "reg", regs,  2*sizeof(u32));
125
126		/* Delete the FeatFS node */
127		devp = finddevice("/plb/ebc/nor_flash@0/partition@5");
128		if (!devp)
129			fatal("Can't find FDT node for partition@5");
130		del_node(devp);
131	}
132}
133
134void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
135		   unsigned long r6, unsigned long r7)
136{
137	CUBOOT_INIT();
138	platform_ops.fixups = hotfoot_fixups;
139        platform_ops.exit = ibm40x_dbcr_reset;
140	fdt_init(_dtb_start);
141	serial_console_init();
142}
143