Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/powerpc/boot/cuboot-hotfoot.c
10817 views
1
/*

2
 * Old U-boot compatibility for Esteem 195E Hotfoot CPU Board

3
 *

4
 * Author: Solomon Peachy <[email protected]>

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


23
static bd_t bd;

24


25
#define NUM_REGS 3

26


27
static 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


134
void 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


144