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)
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 );
70 mfr |= SDR0_MFR_FIXD; /* Workaround for PCI/DMA */
77 /*************************************************************************
80 ************************************************************************/
83 volatile epld_t *x = (epld_t *) CFG_EPLD_BASE;
85 /* set modes of operation */
86 x->ethuart |= EPLD2_ETH_MODE_10 | EPLD2_ETH_MODE_100 |
87 EPLD2_ETH_MODE_1000 | EPLD2_ETH_DUPLEX_MODE;
88 /* clear ETHERNET_AUTO_NEGO bit to turn on autonegotiation */
89 x->ethuart &= ~EPLD2_ETH_AUTO_NEGO;
91 /* put Ethernet+PHY in reset */
92 x->ethuart &= ~EPLD2_RESET_ETH_N;
94 /* take Ethernet+PHY out of reset */
95 x->ethuart |= EPLD2_RESET_ETH_N;
101 /*************************************************************************
104 ************************************************************************/
107 char *s = getenv("serial#");
109 printf("Board: Luan - AMCC PPC440SP Evaluation Board");
121 * Override the default functions in cpu/ppc4xx/44x_spd_ddr2.c with
122 * board specific values.
124 u32 ddr_clktr(u32 default_val) {
125 return (SDRAM_CLKTR_CLKP_180_DEG_ADV);
128 /*************************************************************************
131 ************************************************************************/
132 #if defined(CFG_DRAM_TEST)
135 unsigned long *mem = (unsigned long *) 0;
136 const unsigned long kend = (1024 / sizeof(unsigned long));
141 for (k = 0; k < CFG_KBYTES_SDRAM;
142 ++k, mem += (1024 / sizeof(unsigned long))) {
143 if ((k & 1023) == 0) {
144 printf("%3d MB\r", k / 1024);
147 memset(mem, 0xaaaaaaaa, 1024);
148 for (n = 0; n < kend; ++n) {
149 if (mem[n] != 0xaaaaaaaa) {
150 printf("SDRAM test fails at: %08x\n",
156 memset(mem, 0x55555555, 1024);
157 for (n = 0; n < kend; ++n) {
158 if (mem[n] != 0x55555555) {
159 printf("SDRAM test fails at: %08x\n",
165 printf("SDRAM test passes\n");
172 /*************************************************************************
175 * This routine is called just prior to registering the hose and gives
176 * the board the opportunity to check things. Returning a value of zero
177 * indicates that things are bad & PCI initialization should be aborted.
179 * Different boards may wish to customize the pci controller structure
180 * (add regions, override default access routines, etc) or perform
181 * certain pre-initialization actions.
183 ************************************************************************/
184 #if defined(CONFIG_PCI)
185 int pci_pre_init( struct pci_controller *hose )
189 /*--------------------------------------------------------------------------+
190 * The luan board is always configured as the host & requires the
191 * PCI arbiter to be enabled.
192 *--------------------------------------------------------------------------*/
193 mfsdr(sdr_sdstp1, strap);
194 if( (strap & SDR0_SDSTP1_PAE_MASK) == 0 ) {
195 printf("PCI: SDR0_STRP1[%08lX] - PCI Arbiter disabled.\n",strap);
202 #endif /* defined(CONFIG_PCI) */
205 /*************************************************************************
208 * The bootstrap configuration provides default settings for the pci
209 * inbound map (PIM). But the bootstrap config choices are limited and
210 * may not be sufficient for a given board.
212 ************************************************************************/
213 #if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
214 void pci_target_init(struct pci_controller *hose)
216 /*--------------------------------------------------------------------------+
218 *--------------------------------------------------------------------------*/
219 out32r( PCIX0_PIM0SA, 0 ); /* disable */
220 out32r( PCIX0_PIM1SA, 0 ); /* disable */
221 out32r( PCIX0_PIM2SA, 0 ); /* disable */
222 out32r( PCIX0_EROMBA, 0 ); /* disable expansion rom */
224 /*--------------------------------------------------------------------------+
225 * Map all of SDRAM to PCI address 0x0000_0000. Note that the 440 strapping
226 * options to not support sizes such as 128/256 MB.
227 *--------------------------------------------------------------------------*/
228 out32r( PCIX0_PIM0LAL, CFG_SDRAM_BASE );
229 out32r( PCIX0_PIM0LAH, 0 );
230 out32r( PCIX0_PIM0SA, ~(gd->ram_size - 1) | 1 );
232 out32r( PCIX0_BAR0, 0 );
234 /*--------------------------------------------------------------------------+
235 * Program the board's subsystem id/vendor id
236 *--------------------------------------------------------------------------*/
237 out16r( PCIX0_SBSYSVID, CFG_PCI_SUBSYS_VENDORID );
238 out16r( PCIX0_SBSYSID, CFG_PCI_SUBSYS_DEVICEID );
240 out16r( PCIX0_CMD, in16r(PCIX0_CMD) | PCI_COMMAND_MEMORY );
242 #endif /* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */
245 /*************************************************************************
248 * This routine is called to determine if a pci scan should be
249 * performed. With various hardware environments (especially cPCI and
250 * PPMC) it's insufficient to depend on the state of the arbiter enable
251 * bit in the strap register, or generic host/adapter assumptions.
253 * Rather than hard-code a bad assumption in the general 440 code, the
254 * 440 pci code requires the board to decide at runtime.
256 * Return 0 for adapter mode, non-zero for host (monarch) mode.
259 ************************************************************************/
260 #if defined(CONFIG_PCI)
261 int is_pci_host(struct pci_controller *hose)
265 #endif /* defined(CONFIG_PCI) */
268 /*************************************************************************
271 * This routine is called to reset (keep alive) the watchdog timer
273 ************************************************************************/
274 #if defined(CONFIG_HW_WATCHDOG)
275 void hw_watchdog_reset(void)
281 /*************************************************************************
284 ************************************************************************/
285 static int on_off( const char *s )
287 if (strcmp(s, "on") == 0) {
289 } else if (strcmp(s, "off") == 0) {
296 /*************************************************************************
297 * void l2cache_disable()
299 ************************************************************************/
300 static void l2cache_disable(void)
302 mtdcr( l2_cache_cfg, 0 );
306 /*************************************************************************
307 * void l2cache_enable()
309 ************************************************************************/
310 static void l2cache_enable(void) /* see p258 7.4.1 Enabling L2 Cache */
312 mtdcr( l2_cache_cfg, 0x80000000 ); /* enable L2_MODE L2_CFG[L2M] */
314 mtdcr( l2_cache_addr, 0 ); /* set L2_ADDR with all zeros */
316 mtdcr( l2_cache_cmd, 0x80000000 ); /* issue HCLEAR command via L2_CMD */
318 while (!(mfdcr( l2_cache_stat ) & 0x80000000 )) ;; /* poll L2_SR for completion */
320 mtdcr( l2_cache_cmd, 0x10000000 ); /* clear cache errors L2_CMD[CCP] */
322 mtdcr( l2_cache_cmd, 0x08000000 ); /* clear tag errors L2_CMD[CTE] */
324 mtdcr( l2_cache_snp0, 0 ); /* snoop registers */
325 mtdcr( l2_cache_snp1, 0 );
327 __asm__ volatile ("sync"); /* msync */
329 mtdcr( l2_cache_cfg, 0xe0000000 ); /* inst and data use L2 */
331 __asm__ volatile ("sync");
335 /*************************************************************************
336 * int l2cache_status()
338 ************************************************************************/
339 static int l2cache_status(void)
341 return (mfdcr( l2_cache_cfg ) & 0x60000000) != 0;
345 /*************************************************************************
348 ************************************************************************/
349 int do_l2cache( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[] )
352 case 2: /* on / off */
353 switch (on_off(argv[1])) {
354 case 0: l2cache_disable();
356 case 1: l2cache_enable();
360 case 1: /* get status */
361 printf ("L2 Cache is %s\n",
362 l2cache_status() ? "ON" : "OFF");
365 printf ("Usage:\n%s\n", cmdtp->usage);
374 l2cache, 2, 1, do_l2cache,
375 "l2cache - enable or disable L2 cache\n",
377 " - enable or disable L2 cache\n"