3 * John Otken, jotken@softadvances.com
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 #include <asm/processor.h>
28 #include <spd_sdram.h>
31 DECLARE_GLOBAL_DATA_PTR;
33 extern flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
36 /*************************************************************************
37 * int board_early_init_f()
39 ************************************************************************/
40 int board_early_init_f(void)
42 volatile epld_t *x = (epld_t *) CFG_EPLD_BASE;
44 mtebc( pb0ap, 0x03800000 ); /* set chip selects */
45 mtebc( pb0cr, 0xffc58000 ); /* ebc0_b0cr, 4MB at 0xffc00000 CS0 */
46 mtebc( pb1ap, 0x03800000 );
47 mtebc( pb1cr, 0xff018000 ); /* ebc0_b1cr, 1MB at 0xff000000 CS1 */
48 mtebc( pb2ap, 0x03800000 );
49 mtebc( pb2cr, 0xff838000 ); /* ebc0_b2cr, 2MB at 0xff800000 CS2 */
51 mtdcr( uic1sr, 0xffffffff ); /* Clear all interrupts */
52 mtdcr( uic1er, 0x00000000 ); /* disable all interrupts */
53 mtdcr( uic1cr, 0x00000000 ); /* Set Critical / Non Critical interrupts */
54 mtdcr( uic1pr, 0x7fff83ff ); /* Set Interrupt Polarities */
55 mtdcr( uic1tr, 0x001f8000 ); /* Set Interrupt Trigger Levels */
56 mtdcr( uic1vr, 0x00000001 ); /* Set Vect base=0,INT31 Highest priority */
57 mtdcr( uic1sr, 0x00000000 ); /* clear all interrupts */
58 mtdcr( uic1sr, 0xffffffff );
60 mtdcr( uic0sr, 0xffffffff ); /* Clear all interrupts */
61 mtdcr( uic0er, 0x00000000 ); /* disable all interrupts excepted cascade */
62 mtdcr( uic0cr, 0x00000001 ); /* Set Critical / Non Critical interrupts */
63 mtdcr( uic0pr, 0xffffffff ); /* Set Interrupt Polarities */
64 mtdcr( uic0tr, 0x01000004 ); /* Set Interrupt Trigger Levels */
65 mtdcr( uic0vr, 0x00000001 ); /* Set Vect base=0,INT31 Highest priority */
66 mtdcr( uic0sr, 0x00000000 ); /* clear all interrupts */
67 mtdcr( uic0sr, 0xffffffff );
69 x->ethuart &= ~EPLD2_RESET_ETH_N; /* put Ethernet+PHY in reset */
75 /*************************************************************************
78 ************************************************************************/
81 volatile epld_t *x = (epld_t *) CFG_EPLD_BASE;
82 x->ethuart |= EPLD2_RESET_ETH_N; /* take Ethernet+PHY out of reset */
88 /*************************************************************************
91 ************************************************************************/
94 char *s = getenv("serial#");
96 printf("Board: Luan - AMCC PPC440SP Evaluation Board");
108 /*************************************************************************
111 ************************************************************************/
112 #if defined(CFG_DRAM_TEST)
115 unsigned long *mem = (unsigned long *) 0;
116 const unsigned long kend = (1024 / sizeof(unsigned long));
121 for (k = 0; k < CFG_KBYTES_SDRAM;
122 ++k, mem += (1024 / sizeof(unsigned long))) {
123 if ((k & 1023) == 0) {
124 printf("%3d MB\r", k / 1024);
127 memset(mem, 0xaaaaaaaa, 1024);
128 for (n = 0; n < kend; ++n) {
129 if (mem[n] != 0xaaaaaaaa) {
130 printf("SDRAM test fails at: %08x\n",
136 memset(mem, 0x55555555, 1024);
137 for (n = 0; n < kend; ++n) {
138 if (mem[n] != 0x55555555) {
139 printf("SDRAM test fails at: %08x\n",
145 printf("SDRAM test passes\n");
152 /*************************************************************************
155 * This routine is called just prior to registering the hose and gives
156 * the board the opportunity to check things. Returning a value of zero
157 * indicates that things are bad & PCI initialization should be aborted.
159 * Different boards may wish to customize the pci controller structure
160 * (add regions, override default access routines, etc) or perform
161 * certain pre-initialization actions.
163 ************************************************************************/
164 #if defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT)
165 int pci_pre_init( struct pci_controller *hose )
169 /*--------------------------------------------------------------------------+
170 * The luan board is always configured as the host & requires the
171 * PCI arbiter to be enabled.
172 *--------------------------------------------------------------------------*/
173 mfsdr(sdr_sdstp1, strap);
174 if( (strap & SDR0_SDSTP1_PAE_MASK) == 0 ) {
175 printf("PCI: SDR0_STRP1[%08lX] - PCI Arbiter disabled.\n",strap);
182 #endif /* defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT) */
185 /*************************************************************************
188 * The bootstrap configuration provides default settings for the pci
189 * inbound map (PIM). But the bootstrap config choices are limited and
190 * may not be sufficient for a given board.
192 ************************************************************************/
193 #if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
194 void pci_target_init(struct pci_controller *hose)
196 /*--------------------------------------------------------------------------+
198 *--------------------------------------------------------------------------*/
199 out32r( PCIX0_PIM0SA, 0 ); /* disable */
200 out32r( PCIX0_PIM1SA, 0 ); /* disable */
201 out32r( PCIX0_PIM2SA, 0 ); /* disable */
202 out32r( PCIX0_EROMBA, 0 ); /* disable expansion rom */
204 /*--------------------------------------------------------------------------+
205 * Map all of SDRAM to PCI address 0x0000_0000. Note that the 440 strapping
206 * options to not support sizes such as 128/256 MB.
207 *--------------------------------------------------------------------------*/
208 out32r( PCIX0_PIM0LAL, CFG_SDRAM_BASE );
209 out32r( PCIX0_PIM0LAH, 0 );
210 out32r( PCIX0_PIM0SA, ~(gd->ram_size - 1) | 1 );
212 out32r( PCIX0_BAR0, 0 );
214 /*--------------------------------------------------------------------------+
215 * Program the board's subsystem id/vendor id
216 *--------------------------------------------------------------------------*/
217 out16r( PCIX0_SBSYSVID, CFG_PCI_SUBSYS_VENDORID );
218 out16r( PCIX0_SBSYSID, CFG_PCI_SUBSYS_DEVICEID );
220 out16r( PCIX0_CMD, in16r(PCIX0_CMD) | PCI_COMMAND_MEMORY );
222 #endif /* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */
225 /*************************************************************************
228 * This routine is called to determine if a pci scan should be
229 * performed. With various hardware environments (especially cPCI and
230 * PPMC) it's insufficient to depend on the state of the arbiter enable
231 * bit in the strap register, or generic host/adapter assumptions.
233 * Rather than hard-code a bad assumption in the general 440 code, the
234 * 440 pci code requires the board to decide at runtime.
236 * Return 0 for adapter mode, non-zero for host (monarch) mode.
239 ************************************************************************/
240 #if defined(CONFIG_PCI)
241 int is_pci_host(struct pci_controller *hose)
245 #endif /* defined(CONFIG_PCI) */
248 /*************************************************************************
251 * This routine is called to reset (keep alive) the watchdog timer
253 ************************************************************************/
254 #if defined(CONFIG_HW_WATCHDOG)
255 void hw_watchdog_reset(void)
261 /*************************************************************************
264 ************************************************************************/
265 static int on_off( const char *s )
267 if (strcmp(s, "on") == 0) {
269 } else if (strcmp(s, "off") == 0) {
276 /*************************************************************************
277 * void l2cache_disable()
279 ************************************************************************/
280 static void l2cache_disable(void)
282 mtdcr( l2_cache_cfg, 0 );
286 /*************************************************************************
287 * void l2cache_enable()
289 ************************************************************************/
290 static void l2cache_enable(void) /* see p258 7.4.1 Enabling L2 Cache */
292 mtdcr( l2_cache_cfg, 0x80000000 ); /* enable L2_MODE L2_CFG[L2M] */
294 mtdcr( l2_cache_addr, 0 ); /* set L2_ADDR with all zeros */
296 mtdcr( l2_cache_cmd, 0x80000000 ); /* issue HCLEAR command via L2_CMD */
298 while (!(mfdcr( l2_cache_stat ) & 0x80000000 )) ;; /* poll L2_SR for completion */
300 mtdcr( l2_cache_cmd, 0x10000000 ); /* clear cache errors L2_CMD[CCP] */
302 mtdcr( l2_cache_cmd, 0x08000000 ); /* clear tag errors L2_CMD[CTE] */
304 mtdcr( l2_cache_snp0, 0 ); /* snoop registers */
305 mtdcr( l2_cache_snp1, 0 );
307 __asm__ volatile ("sync"); /* msync */
309 mtdcr( l2_cache_cfg, 0xe0000000 ); /* inst and data use L2 */
311 __asm__ volatile ("sync");
315 /*************************************************************************
316 * int l2cache_status()
318 ************************************************************************/
319 static int l2cache_status(void)
321 return (mfdcr( l2_cache_cfg ) & 0x60000000) != 0;
325 /*************************************************************************
328 ************************************************************************/
329 int do_l2cache( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[] )
332 case 2: /* on / off */
333 switch (on_off(argv[1])) {
334 case 0: l2cache_disable();
336 case 1: l2cache_enable();
340 case 1: /* get status */
341 printf ("L2 Cache is %s\n",
342 l2cache_status() ? "ON" : "OFF");
345 printf ("Usage:\n%s\n", cmdtp->usage);
354 l2cache, 2, 1, do_l2cache,
355 "l2cache - enable or disable L2 cache\n",
357 " - enable or disable L2 cache\n"