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 * Override the default functions in cpu/ppc4xx/44x_spd_ddr2.c with
109 * board specific values.
111 u32 ddr_clktr(u32 default_val) {
112 return (SDRAM_CLKTR_CLKP_180_DEG_ADV);
115 /*************************************************************************
118 ************************************************************************/
119 #if defined(CFG_DRAM_TEST)
122 unsigned long *mem = (unsigned long *) 0;
123 const unsigned long kend = (1024 / sizeof(unsigned long));
128 for (k = 0; k < CFG_KBYTES_SDRAM;
129 ++k, mem += (1024 / sizeof(unsigned long))) {
130 if ((k & 1023) == 0) {
131 printf("%3d MB\r", k / 1024);
134 memset(mem, 0xaaaaaaaa, 1024);
135 for (n = 0; n < kend; ++n) {
136 if (mem[n] != 0xaaaaaaaa) {
137 printf("SDRAM test fails at: %08x\n",
143 memset(mem, 0x55555555, 1024);
144 for (n = 0; n < kend; ++n) {
145 if (mem[n] != 0x55555555) {
146 printf("SDRAM test fails at: %08x\n",
152 printf("SDRAM test passes\n");
159 /*************************************************************************
162 * This routine is called just prior to registering the hose and gives
163 * the board the opportunity to check things. Returning a value of zero
164 * indicates that things are bad & PCI initialization should be aborted.
166 * Different boards may wish to customize the pci controller structure
167 * (add regions, override default access routines, etc) or perform
168 * certain pre-initialization actions.
170 ************************************************************************/
171 #if defined(CONFIG_PCI)
172 int pci_pre_init( struct pci_controller *hose )
176 /*--------------------------------------------------------------------------+
177 * The luan board is always configured as the host & requires the
178 * PCI arbiter to be enabled.
179 *--------------------------------------------------------------------------*/
180 mfsdr(sdr_sdstp1, strap);
181 if( (strap & SDR0_SDSTP1_PAE_MASK) == 0 ) {
182 printf("PCI: SDR0_STRP1[%08lX] - PCI Arbiter disabled.\n",strap);
189 #endif /* defined(CONFIG_PCI) */
192 /*************************************************************************
195 * The bootstrap configuration provides default settings for the pci
196 * inbound map (PIM). But the bootstrap config choices are limited and
197 * may not be sufficient for a given board.
199 ************************************************************************/
200 #if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
201 void pci_target_init(struct pci_controller *hose)
203 /*--------------------------------------------------------------------------+
205 *--------------------------------------------------------------------------*/
206 out32r( PCIX0_PIM0SA, 0 ); /* disable */
207 out32r( PCIX0_PIM1SA, 0 ); /* disable */
208 out32r( PCIX0_PIM2SA, 0 ); /* disable */
209 out32r( PCIX0_EROMBA, 0 ); /* disable expansion rom */
211 /*--------------------------------------------------------------------------+
212 * Map all of SDRAM to PCI address 0x0000_0000. Note that the 440 strapping
213 * options to not support sizes such as 128/256 MB.
214 *--------------------------------------------------------------------------*/
215 out32r( PCIX0_PIM0LAL, CFG_SDRAM_BASE );
216 out32r( PCIX0_PIM0LAH, 0 );
217 out32r( PCIX0_PIM0SA, ~(gd->ram_size - 1) | 1 );
219 out32r( PCIX0_BAR0, 0 );
221 /*--------------------------------------------------------------------------+
222 * Program the board's subsystem id/vendor id
223 *--------------------------------------------------------------------------*/
224 out16r( PCIX0_SBSYSVID, CFG_PCI_SUBSYS_VENDORID );
225 out16r( PCIX0_SBSYSID, CFG_PCI_SUBSYS_DEVICEID );
227 out16r( PCIX0_CMD, in16r(PCIX0_CMD) | PCI_COMMAND_MEMORY );
229 #endif /* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */
232 /*************************************************************************
235 * This routine is called to determine if a pci scan should be
236 * performed. With various hardware environments (especially cPCI and
237 * PPMC) it's insufficient to depend on the state of the arbiter enable
238 * bit in the strap register, or generic host/adapter assumptions.
240 * Rather than hard-code a bad assumption in the general 440 code, the
241 * 440 pci code requires the board to decide at runtime.
243 * Return 0 for adapter mode, non-zero for host (monarch) mode.
246 ************************************************************************/
247 #if defined(CONFIG_PCI)
248 int is_pci_host(struct pci_controller *hose)
252 #endif /* defined(CONFIG_PCI) */
255 /*************************************************************************
258 * This routine is called to reset (keep alive) the watchdog timer
260 ************************************************************************/
261 #if defined(CONFIG_HW_WATCHDOG)
262 void hw_watchdog_reset(void)
268 /*************************************************************************
271 ************************************************************************/
272 static int on_off( const char *s )
274 if (strcmp(s, "on") == 0) {
276 } else if (strcmp(s, "off") == 0) {
283 /*************************************************************************
284 * void l2cache_disable()
286 ************************************************************************/
287 static void l2cache_disable(void)
289 mtdcr( l2_cache_cfg, 0 );
293 /*************************************************************************
294 * void l2cache_enable()
296 ************************************************************************/
297 static void l2cache_enable(void) /* see p258 7.4.1 Enabling L2 Cache */
299 mtdcr( l2_cache_cfg, 0x80000000 ); /* enable L2_MODE L2_CFG[L2M] */
301 mtdcr( l2_cache_addr, 0 ); /* set L2_ADDR with all zeros */
303 mtdcr( l2_cache_cmd, 0x80000000 ); /* issue HCLEAR command via L2_CMD */
305 while (!(mfdcr( l2_cache_stat ) & 0x80000000 )) ;; /* poll L2_SR for completion */
307 mtdcr( l2_cache_cmd, 0x10000000 ); /* clear cache errors L2_CMD[CCP] */
309 mtdcr( l2_cache_cmd, 0x08000000 ); /* clear tag errors L2_CMD[CTE] */
311 mtdcr( l2_cache_snp0, 0 ); /* snoop registers */
312 mtdcr( l2_cache_snp1, 0 );
314 __asm__ volatile ("sync"); /* msync */
316 mtdcr( l2_cache_cfg, 0xe0000000 ); /* inst and data use L2 */
318 __asm__ volatile ("sync");
322 /*************************************************************************
323 * int l2cache_status()
325 ************************************************************************/
326 static int l2cache_status(void)
328 return (mfdcr( l2_cache_cfg ) & 0x60000000) != 0;
332 /*************************************************************************
335 ************************************************************************/
336 int do_l2cache( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[] )
339 case 2: /* on / off */
340 switch (on_off(argv[1])) {
341 case 0: l2cache_disable();
343 case 1: l2cache_enable();
347 case 1: /* get status */
348 printf ("L2 Cache is %s\n",
349 l2cache_status() ? "ON" : "OFF");
352 printf ("Usage:\n%s\n", cmdtp->usage);
361 l2cache, 2, 1, do_l2cache,
362 "l2cache - enable or disable L2 cache\n",
364 " - enable or disable L2 cache\n"