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git.ipfire.org Git - people/ms/u-boot.git/blob - common/cmd_universe.c
2 * (C) Copyright 2003 Stefan Roese, stefan.roese@esd-electronics.com
4 * See file CREDITS for list of people who contributed to this
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
31 #define PCI_VENDOR PCI_VENDOR_ID_TUNDRA
32 #define PCI_DEVICE PCI_DEVICE_ID_TUNDRA_CA91C042
35 typedef struct _UNI_DEV UNI_DEV
;
47 int universe_init(void)
53 busdevfn
= pci_find_device(PCI_VENDOR
, PCI_DEVICE
, 0);
55 puts("No Tundra Universe found!\n");
59 /* Lets turn Latency off */
60 pci_write_config_dword(busdevfn
, 0x0c, 0);
62 dev
= malloc(sizeof(*dev
));
64 puts("UNIVERSE: No memory!\n");
69 memset(dev
, 0, sizeof(*dev
));
70 dev
->busdevfn
= busdevfn
;
72 pci_read_config_dword(busdevfn
, PCI_BASE_ADDRESS_1
, &val
);
74 pci_read_config_dword(busdevfn
, PCI_BASE_ADDRESS_0
, &val
);
77 dev
->uregs
= (UNIVERSE
*)val
;
79 debug ("UNIVERSE-Base : %p\n", dev
->uregs
);
82 debug (" Read via mapping, PCI_ID = %08X\n", readl(&dev
->uregs
->pci_id
));
83 if (((PCI_DEVICE
<<16) | PCI_VENDOR
) != readl(&dev
->uregs
->pci_id
)) {
84 printf ("UNIVERSE: Cannot read PCI-ID via Mapping: %08x\n",
85 readl(&dev
->uregs
->pci_id
));
90 debug ("PCI_BS = %08X\n", readl(&dev
->uregs
->pci_bs
));
92 dev
->pci_bs
= readl(&dev
->uregs
->pci_bs
);
94 /* turn off windows */
95 for (j
=0; j
<4; j
++) {
96 writel(0x00800000, &dev
->uregs
->lsi
[j
].ctl
);
97 writel(0x00800000, &dev
->uregs
->vsi
[j
].ctl
);
101 * Write to Misc Register
102 * Set VME Bus Time-out
106 writel(0x15040000 | (readl(&dev
->uregs
->misc_ctl
) & 0x00020000), &dev
->uregs
->misc_ctl
);
108 if (readl(&dev
->uregs
->misc_ctl
) & 0x00020000) {
109 debug ("System Controller!\n"); /* test-only */
111 debug ("Not System Controller!\n"); /* test-only */
115 * Lets turn off interrupts
117 writel(0x00000000,&dev
->uregs
->lint_en
); /* Disable interrupts in the Universe first */
118 writel(0x0000FFFF,&dev
->uregs
->lint_stat
); /* Clear Any Pending Interrupts */
120 writel(0x0000, &dev
->uregs
->lint_map0
); /* Map all ints to 0 */
121 writel(0x0000, &dev
->uregs
->lint_map1
); /* Map all ints to 0 */
134 * Create pci slave window (access: pci -> vme)
136 int universe_pci_slave_window(unsigned int pciAddr
, unsigned int vmeAddr
, int size
, int vam
, int pms
, int vdw
)
139 unsigned int ctl
= 0;
146 for (i
= 0; i
< 4; i
++) {
147 if (0x00800000 == readl(&dev
->uregs
->lsi
[i
].ctl
))
152 printf ("universe: No Image available\n");
157 debug ("universe: Using image %d\n", i
);
159 writel(pciAddr
, &dev
->uregs
->lsi
[i
].bs
);
160 writel((pciAddr
+ size
), &dev
->uregs
->lsi
[i
].bd
);
161 writel((vmeAddr
- pciAddr
), &dev
->uregs
->lsi
[i
].to
);
163 switch (vam
& VME_AM_Axx
) {
175 switch (vam
& VME_AM_Mxx
) {
184 if (vam
& VME_AM_SUP
) {
189 switch (vdw
& VME_FLAG_Dxx
) {
201 switch (pms
& PCI_MS_Mxx
) {
213 ctl
|= 0x80000000; /* enable */
215 writel(ctl
, &dev
->uregs
->lsi
[i
].ctl
);
217 debug ("universe: window-addr=%p\n", &dev
->uregs
->lsi
[i
].ctl
);
218 debug ("universe: pci slave window[%d] ctl=%08x\n", i
, readl(&dev
->uregs
->lsi
[i
].ctl
));
219 debug ("universe: pci slave window[%d] bs=%08x\n", i
, readl(&dev
->uregs
->lsi
[i
].bs
));
220 debug ("universe: pci slave window[%d] bd=%08x\n", i
, readl(&dev
->uregs
->lsi
[i
].bd
));
221 debug ("universe: pci slave window[%d] to=%08x\n", i
, readl(&dev
->uregs
->lsi
[i
].to
));
231 * Create vme slave window (access: vme -> pci)
233 int universe_vme_slave_window(unsigned int vmeAddr
, unsigned int pciAddr
, int size
, int vam
, int pms
)
236 unsigned int ctl
= 0;
243 for (i
= 0; i
< 4; i
++) {
244 if (0x00800000 == readl(&dev
->uregs
->vsi
[i
].ctl
))
249 printf ("universe: No Image available\n");
254 debug ("universe: Using image %d\n", i
);
256 writel(vmeAddr
, &dev
->uregs
->vsi
[i
].bs
);
257 writel((vmeAddr
+ size
), &dev
->uregs
->vsi
[i
].bd
);
258 writel((pciAddr
- vmeAddr
), &dev
->uregs
->vsi
[i
].to
);
260 switch (vam
& VME_AM_Axx
) {
272 switch (vam
& VME_AM_Mxx
) {
281 if (vam
& VME_AM_SUP
) {
286 switch (pms
& PCI_MS_Mxx
) {
298 ctl
|= 0x80f00000; /* enable */
300 writel(ctl
, &dev
->uregs
->vsi
[i
].ctl
);
302 debug ("universe: window-addr=%p\n", &dev
->uregs
->vsi
[i
].ctl
);
303 debug ("universe: vme slave window[%d] ctl=%08x\n", i
, readl(&dev
->uregs
->vsi
[i
].ctl
));
304 debug ("universe: vme slave window[%d] bs=%08x\n", i
, readl(&dev
->uregs
->vsi
[i
].bs
));
305 debug ("universe: vme slave window[%d] bd=%08x\n", i
, readl(&dev
->uregs
->vsi
[i
].bd
));
306 debug ("universe: vme slave window[%d] to=%08x\n", i
, readl(&dev
->uregs
->vsi
[i
].to
));
316 * Tundra Universe configuration
318 int do_universe(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
320 ulong addr1
= 0, addr2
= 0, size
= 0, vam
= 0, pms
= 0, vdw
= 0;
327 addr1
= simple_strtoul(argv
[2], NULL
, 16);
329 addr2
= simple_strtoul(argv
[3], NULL
, 16);
331 size
= simple_strtoul(argv
[4], NULL
, 16);
333 vam
= simple_strtoul(argv
[5], NULL
, 16);
335 pms
= simple_strtoul(argv
[6], NULL
, 16);
337 vdw
= simple_strtoul(argv
[7], NULL
, 16);
344 printf("Configuring Universe VME Slave Window (VME->PCI):\n");
345 printf(" vme=%08lx pci=%08lx size=%08lx vam=%02lx pms=%02lx\n",
346 addr1
, addr2
, size
, vam
, pms
);
347 universe_vme_slave_window(addr1
, addr2
, size
, vam
, pms
);
350 printf("Configuring Universe PCI Slave Window (PCI->VME):\n");
351 printf(" pci=%08lx vme=%08lx size=%08lx vam=%02lx pms=%02lx vdw=%02lx\n",
352 addr1
, addr2
, size
, vam
, pms
, vdw
);
353 universe_pci_slave_window(addr1
, addr2
, size
, vam
, pms
, vdw
);
356 printf("Universe command %s not supported!\n", argv
[1]);
364 universe
, 8, 1, do_universe
,
365 "initialize and configure Turndra Universe",
367 " - initialize universe\n"
368 "universe vme [vme_addr] [pci_addr] [size] [vam] [pms]\n"
369 " - create vme slave window (access: vme->pci)\n"
370 "universe pci [pci_addr] [vme_addr] [size] [vam] [pms] [vdw]\n"
371 " - create pci slave window (access: pci->vme)\n"
372 " [vam] = VMEbus Address-Modifier: 01 -> A16 Address Space\n"
373 " 02 -> A24 Address Space\n"
374 " 03 -> A32 Address Space\n"
375 " 04 -> Supervisor AM Code\n"
376 " 10 -> Data AM Code\n"
377 " 20 -> Program AM Code\n"
378 " [pms] = PCI Memory Space: 01 -> Memory Space\n"
380 " 03 -> Configuration Space\n"
381 " [vdw] = VMEbus Maximum Datawidth: 01 -> D8 Data Width\n"
382 " 02 -> D16 Data Width\n"
383 " 03 -> D32 Data Width"