summaryrefslogtreecommitdiff
path: root/src/mainboard/digitallogic/msm586seg/mainboard.c
blob: 13f28f43b7e716978b62bf0976ca5b5c7479c345 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <cpu/amd/sc520.h>
#include "chip.h"


static void irqdump()
{
  volatile unsigned char *irq;
  void *mmcr;


  int i;
  int irqlist[] = {0xd00, 0xd02, 0xd03, 0xd04, 0xd08, 0xd0a,
	        0xd14, 0xd18, 0xd1a, 0xd1b, 0xd1c,
		0xd20, 0xd21, 0xd22, 0xd28, 0xd29, 
		0xd30, 0xd31, 0xd32, 0xd33,
		0xd40, 0xd41, 0xd42, 0xd43,0xd44, 0xd45, 0xd46, 
		0xd50, 0xd51, 0xd52, 0xd53,0xd54, 0xd55, 0xd56, 0xd57,0xd58, 0xd59, 0xd5a, 
		-1};
  mmcr = (void *) 0xfffef000;

  printk_err("mmcr is %p\n", mmcr);
  for(i = 0; irqlist[i] >= 0; i++) {
    irq = mmcr + irqlist[i];
    printk_err("0x%x register @%p is 0x%lx\n", irqlist[i], irq, *irq);
  }

}

/* TODO: finish up mmcr struct in sc520.h, and;
   - set ADDDECTL (now done in raminit.c in cpu/amd/sc520
*/
static void enable_dev(struct device *dev) {
	extern unsigned char *rom_start, *rom_end;
	volatile struct mmcrpic *pic = MMCRPIC;
	volatile struct mmcr *mmcr = MMCRDEFAULT;

	/* msm586seg has this register set to a weird value. 
	 * follow the board, not the manual!
	 */

	/* currently, nothing in the device to use, so ignore it. */
	printk_err("digital logic msm586 seg ENTER %s\n", __FUNCTION__);


	/* from fuctory bios */
	/* NOTE: the following interrupt settings made interrupts work
	 * for hard drive, and serial, but not for ethernet 
	 */
	/* just do what they say and nobody gets hurt. */
	mmcr->pic.pcicr = 0 ; // M_GINT_MODE | M_S1_MODE | M_S2_MODE;
	/* all ints to level */
	mmcr->pic.mpicmode = 0;
	mmcr->pic.sl1picmode = 0;
	mmcr->pic.sl2picmode = 0x80;

	mmcr->pic.intpinpol = 0;

	mmcr->pic.pit0map = 1;
	mmcr->pic.uart1map = 0xc;
	mmcr->pic.uart2map = 0xb;
	mmcr->pic.rtcmap = 3;
	mmcr->pic.ferrmap = 8;
	mmcr->pic.gp0imap = 6;
	mmcr->pic.gp1imap = 2;
	mmcr->pic.gp2imap = 7;
	mmcr->pic.gp6imap = 0x15;
	mmcr->pic.gp7imap = 0x16;
	mmcr->pic.gp10imap = 0x9;
	mmcr->pic.gp9imap = 0x4;





	irqdump();
	printk_err("uart 1 ctl is 0x%x\n", *(unsigned char *) 0xfffefcc0);

	printk_err("0xc20 ctl is 0x%x\n", *(unsigned short *) 0xfffefc20);
	printk_err("0xc22 0x%x\n", *(unsigned short *) 0xfffefc22b);

	/* The following block has NOT proven sufficient to get
	 * the VGA hardware to talk to us 
	 */
	/* let's set some mmcr stuff per the BIOS settings */
	mmcr->dbctl.dbctl = 0x10;
	mmcr->sysarb.ctl = 6;
	mmcr->sysarb.menb = 0xf;
	mmcr->sysarb.prictl = 0xc0000f0f;
	/* this is bios setting, depends on sysarb above */
	mmcr->hostbridge.ctl = 0x108;
	printk_err("digital logic msm586 seg EXIT %s\n", __FUNCTION__);

	/* pio */
	mmcr->pio.data31_16 = 0xffbf;

	/* pci stuff */
	mmcr->pic.pciintamap = 0xa;

	/* END block where vga hardware still will not talk to us */
	/* all we get from VGA I/O addresses are ffff etc.
	 */
	mmcr->sysmap.adddecctl = 0x10;

	/* VGA now talks to us, so this adddecctl was the trick. 
	 * still no interrupts from enet. 
	 * Let's try fixing the piodata stuff, as there may be 
	 * some wire there not documented.
	 */
	mmcr->pio.data31_16 = 0xffbf;
	/* also, our sl?picmode needs to match fuctory bios */
	mmcr->pic.sl1picmode = 0x80;
	mmcr->pic.sl2picmode = 0x0;
	/* and, finally, they do set gp5imap and we don't. 
	 */
	mmcr->pic.gp5imap = 0xd;
	/* remaining problem: almost certainly, the irq table is bogus
	 * NO SHOCK as it came from fuctory bios. 
	 * but let's try these 4 changes for now and see what shakes.
	 */
	/* still not interrupts. */
	/* their IRQ table is wrong. Just hardwire it */
	{
	  char pciints[4] = {15, 15, 15, 15};
	  pci_assign_irqs(0, 12, pciints);
	}
	/* the assigned failed but we just noticed -- there is no
	 * dma mapping, and selftest on e100 requires that dma work
	 */
	/* follow fuctory here */
	mmcr->dmacontrol.extchanmapa = 0x3210;

	/* hack for IDIOTIC need to fix rom_start */
	printk_err("Patching rom_start due to sc520 limits\n");
	rom_start = 0x2000000 + 0x40000;
	rom_end = rom_start + PAYLOAD_SIZE - 1;

	
}
struct chip_operations mainboard_digitallogic_msm586seg_ops = {
	CHIP_NAME("Digital Logic MSM586SEG mainboard ")
	.enable_dev = enable_dev
};