2 * Copyright (C) 2004-2006 Freescale Semiconductor, Inc.
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,
24 * 20050101: Eran Liberty (liberty@freescale.com)
25 * Initial file creating (porting from 85XX & 8260)
29 * CPU specific code for the MPC83xx family.
31 * Derived from the MPC8260 and MPC85xx.
39 #include <asm/processor.h>
41 DECLARE_GLOBAL_DATA_PTR;
46 volatile immap_t *immr;
47 ulong clock = gd->cpu_clk;
52 immr = (immap_t *)CFG_IMMRBAR;
54 if ((pvr & 0xFFFF0000) != PVR_83xx) {
55 puts("Not MPC83xx Family!!!\n");
59 spridr = immr->sysconf.spridr;
70 case SPR_8347E_REV10_TBGA:
71 case SPR_8347E_REV11_TBGA:
72 case SPR_8347E_REV10_PBGA:
73 case SPR_8347E_REV11_PBGA:
76 case SPR_8347_REV10_TBGA:
77 case SPR_8347_REV11_TBGA:
78 case SPR_8347_REV10_PBGA:
79 case SPR_8347_REV11_PBGA:
101 puts("Rev: Unknown\n");
102 return -1; /* Not sure what this is */
105 #if defined(CONFIG_MPC8349)
106 printf("Rev: %02x at %s MHz\n", (spridr & 0x0000FFFF)>>4 |(spridr & 0x0000000F), strmhz(buf, clock));
108 printf("Rev: %02x at %s MHz\n", spridr & 0x0000FFFF, strmhz(buf, clock));
115 * Program a UPM with the code supplied in the table.
117 * The 'dummy' variable is used to increment the MAD. 'dummy' is
118 * supposed to be a pointer to the memory of the device being
119 * programmed by the UPM. The data in the MDR is written into
120 * memory and the MAD is incremented every time there's a read
121 * from 'dummy'. Unfortunately, the current prototype for this
122 * function doesn't allow for passing the address of this
123 * device, and changing the prototype will break a number lots
124 * of other code, so we need to use a round-about way of finding
125 * the value for 'dummy'.
127 * The value can be extracted from the base address bits of the
128 * Base Register (BR) associated with the specific UPM. To find
129 * that BR, we need to scan all 8 BRs until we find the one that
130 * has its MSEL bits matching the UPM we want. Once we know the
131 * right BR, we can extract the base address bits from it.
133 * The MxMR and the BR and OR of the chosen bank should all be
134 * configured before calling this function.
137 * upm: 0=UPMA, 1=UPMB, 2=UPMC
138 * table: Pointer to an array of values to program
139 * size: Number of elements in the array. Must be 64 or less.
141 void upmconfig (uint upm, uint *table, uint size)
143 #if defined(CONFIG_MPC834X)
144 volatile immap_t *immap = (immap_t *) CFG_IMMRBAR;
145 volatile lbus83xx_t *lbus = &immap->lbus;
146 volatile uchar *dummy = NULL;
147 const u32 msel = (upm + 4) << BR_MSEL_SHIFT; /* What the MSEL field in BRn should be */
148 volatile u32 *mxmr = &lbus->mamr + upm; /* Pointer to mamr, mbmr, or mcmr */
151 /* Scan all the banks to determine the base address of the device */
152 for (i = 0; i < 8; i++) {
153 if ((lbus->bank[i].br & BR_MSEL) == msel) {
154 dummy = (uchar *) (lbus->bank[i].br & BR_BA);
160 printf("Error: %s() could not find matching BR\n", __FUNCTION__);
164 /* Set the OP field in the MxMR to "write" and the MAD field to 000000 */
165 *mxmr = (*mxmr & 0xCFFFFFC0) | 0x10000000;
167 for (i = 0; i < size; i++) {
168 lbus->mdr = table[i];
169 __asm__ __volatile__ ("sync");
170 *dummy; /* Write the value to memory and increment MAD */
171 __asm__ __volatile__ ("sync");
174 /* Set the OP field in the MxMR to "normal" and the MAD field to 000000 */
177 printf("Error: %s() not defined for this configuration.\n", __FUNCTION__);
184 do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
187 #ifndef MPC83xx_RESET
191 volatile immap_t *immap = (immap_t *) CFG_IMMRBAR;
194 /* Interrupts and MMU off */
195 __asm__ __volatile__ ("mfmsr %0":"=r" (msr):);
197 msr &= ~( MSR_EE | MSR_IR | MSR_DR);
198 __asm__ __volatile__ ("mtmsr %0"::"r" (msr));
200 /* enable Reset Control Reg */
201 immap->reset.rpr = 0x52535445;
202 __asm__ __volatile__ ("sync");
203 __asm__ __volatile__ ("isync");
205 /* confirm Reset Control Reg is enabled */
206 while(!((immap->reset.rcer) & RCER_CRE));
208 printf("Resetting the board.");
213 /* perform reset, only one bit */
214 immap->reset.rcr = RCR_SWHR;
216 #else /* ! MPC83xx_RESET */
218 immap->reset.rmr = RMR_CSRE; /* Checkstop Reset enable */
220 /* Interrupts and MMU off */
221 __asm__ __volatile__ ("mfmsr %0":"=r" (msr):);
223 msr &= ~(MSR_ME | MSR_EE | MSR_IR | MSR_DR);
224 __asm__ __volatile__ ("mtmsr %0"::"r" (msr));
227 * Trying to execute the next instruction at a non-existing address
228 * should cause a machine check, resulting in reset
230 addr = CFG_RESET_ADDRESS;
232 printf("resetting the board.");
234 ((void (*)(void)) addr) ();
235 #endif /* MPC83xx_RESET */
242 * Get timebase clock frequency (like cpu_clk in Hz)
245 unsigned long get_tbclk(void)
249 tbclk = (gd->bus_clk + 3L) / 4L;
255 #if defined(CONFIG_WATCHDOG)
256 void watchdog_reset (void)
258 #ifdef CONFIG_MPC834X
259 int re_enable = disable_interrupts();
261 /* Reset the 83xx watchdog */
262 volatile immap_t *immr = (immap_t *) CFG_IMMRBAR;
263 immr->wdt.swsrr = 0x556c;
264 immr->wdt.swsrr = 0xaa39;
267 enable_interrupts ();
274 #if defined(CONFIG_OF_FLAT_TREE)
276 ft_cpu_setup(void *blob, bd_t *bd)
282 clock = bd->bi_busfreq;
283 p = ft_get_prop(blob, "/cpus/" OF_CPU "/bus-frequency", &len);
285 *p = cpu_to_be32(clock);
287 p = ft_get_prop(blob, "/" OF_SOC "/bus-frequency", &len);
289 *p = cpu_to_be32(clock);
291 p = ft_get_prop(blob, "/" OF_SOC "/serial@4500/clock-frequency", &len);
293 *p = cpu_to_be32(clock);
295 p = ft_get_prop(blob, "/" OF_SOC "/serial@4600/clock-frequency", &len);
297 *p = cpu_to_be32(clock);
299 #ifdef CONFIG_MPC83XX_TSEC1
300 p = ft_get_prop(blob, "/" OF_SOC "/ethernet@24000/local-mac-address", &len);
301 memcpy(p, bd->bi_enetaddr, 6);
304 #ifdef CONFIG_MPC83XX_TSEC2
305 p = ft_get_prop(blob, "/" OF_SOC "/ethernet@25000/local-mac-address", &len);
306 memcpy(p, bd->bi_enet1addr, 6);
311 #if defined(CONFIG_DDR_ECC)
314 volatile immap_t *immap = (immap_t *)CFG_IMMRBAR;
315 volatile dma83xx_t *dma = &immap->dma;
316 volatile u32 status = swab32(dma->dmasr0);
317 volatile u32 dmamr0 = swab32(dma->dmamr0);
321 /* initialize DMASARn, DMADAR and DMAABCRn */
322 dma->dmadar0 = (u32)0;
323 dma->dmasar0 = (u32)0;
326 __asm__ __volatile__ ("sync");
327 __asm__ __volatile__ ("isync");
330 dmamr0 &= ~DMA_CHANNEL_START;
331 dma->dmamr0 = swab32(dmamr0);
332 __asm__ __volatile__ ("sync");
333 __asm__ __volatile__ ("isync");
335 /* while the channel is busy, spin */
336 while(status & DMA_CHANNEL_BUSY) {
337 status = swab32(dma->dmasr0);
340 debug("DMA-init end\n");
345 volatile immap_t *immap = (immap_t *)CFG_IMMRBAR;
346 volatile dma83xx_t *dma = &immap->dma;
347 volatile u32 status = swab32(dma->dmasr0);
348 volatile u32 byte_count = swab32(dma->dmabcr0);
350 /* while the channel is busy, spin */
351 while (status & DMA_CHANNEL_BUSY) {
352 status = swab32(dma->dmasr0);
355 if (status & DMA_CHANNEL_TRANSFER_ERROR) {
356 printf ("DMA Error: status = %x @ %d\n", status, byte_count);
362 int dma_xfer(void *dest, u32 count, void *src)
364 volatile immap_t *immap = (immap_t *)CFG_IMMRBAR;
365 volatile dma83xx_t *dma = &immap->dma;
368 /* initialize DMASARn, DMADAR and DMAABCRn */
369 dma->dmadar0 = swab32((u32)dest);
370 dma->dmasar0 = swab32((u32)src);
371 dma->dmabcr0 = swab32(count);
373 __asm__ __volatile__ ("sync");
374 __asm__ __volatile__ ("isync");
376 /* init direct transfer, clear CS bit */
377 dmamr0 = (DMA_CHANNEL_TRANSFER_MODE_DIRECT |
378 DMA_CHANNEL_SOURCE_ADDRESS_HOLD_8B |
379 DMA_CHANNEL_SOURCE_ADRESSS_HOLD_EN);
381 dma->dmamr0 = swab32(dmamr0);
383 __asm__ __volatile__ ("sync");
384 __asm__ __volatile__ ("isync");
386 /* set CS to start DMA transfer */
387 dmamr0 |= DMA_CHANNEL_START;
388 dma->dmamr0 = swab32(dmamr0);
389 __asm__ __volatile__ ("sync");
390 __asm__ __volatile__ ("isync");
392 return ((int)dma_check());
394 #endif /*CONFIG_DDR_ECC*/