* Patch by Arun Dharankar, 4 Apr 2003:

  Add IDMA example code (tested on 8260 only)

* Add support for Purple Board (MIPS64 5Kc)

* Add support for MIPS64 5Kc CPUs

* Fix missing setting of "loadaddr" and "bootfile" on ARM and MIPS

* Patch by Denis Peter, 04 Apr 2003:
  - update MIP405-4 board

* Patches by Denis Peter, 03 April 2003:
  - fix PCI IRQs on MPL boards
  - fix two more un-relocated pointer problems

* Fix behaviour of "run" command:
  - print error message iv variable does not exist
  - terminate processing of arguments in case of error

* Patches by Peter Figuli, 10 Mar 2003
  - Add support for BTUART on PXA platform
  - Add support for WEP EP250 (PXA) board

* Fix flash problems on INCA-IP; add tool to allow bruning images  to
  flash using a BDI2000

* Implement fix for I2C Edge Conditions problem for all boards that
  use the bit-banging driver (common/soft_i2c.c)

* Add patches by Robert Schwebel, 31 Mar 2003:
  - csb226 board: bring in sync with innokom/memsetup.S
  - csb226 board: fix MDREFR handling
  - misc doc fixes / extensions
  - innokom board: cleanup, MDREFR fix in memsetup.S, config update
  - add BOOT_PROGRESS to armlinux.c

1 files changed, 391 insertions, 0 deletions

diff --git a/examples/mem_to_mem_idma2intr.c b/examples/mem_to_mem_idma2intr.c
new file mode 100644
index 0000000..93c6f77
--- /dev/null
+++ b/examples/mem_to_mem_idma2intr.c
@@ -0,0 +1,391 @@
+/* The dpalloc function used and implemented in this file was derieved
+ * from PPCBoot/U-Boot file "cpu/mpc8260/commproc.c".
+ */
+
+/* Author: Arun Dharankar <ADharankar@ATTBI.Com>
+ * This example is meant to only demonstrate how the IDMA could be used.
+ */
+
+/*
+ * This file is based on "arch/ppc/8260_io/commproc.c" - here is it's
+ * copyright notice:
+ *
+ * General Purpose functions for the global management of the
+ * 8260 Communication Processor Module.
+ * Copyright (c) 1999 Dan Malek (dmalek@jlc.net)
+ * Copyright (c) 2000 MontaVista Software, Inc (source@mvista.com)
+ *  2.3.99 Updates
+ *
+ * In addition to the individual control of the communication
+ * channels, there are a few functions that globally affect the
+ * communication processor.
+ *
+ * Buffer descriptors must be allocated from the dual ported memory
+ * space.  The allocator for that is here.  When the communication
+ * process is reset, we reclaim the memory available.  There is
+ * currently no deallocator for this memory.
+ */
+
+
+
+#include <common.h>
+#include <syscall.h>
+
+#define STANDALONE
+
+#ifndef STANDALONE			/* Linked into/Part of  PPCBoot */
+#include <command.h>
+#include <watchdog.h>
+#else					/* Standalone app of PPCBoot */
+#include <syscall.h>
+#define printf	mon_printf
+#define tstc	mon_tstc
+#define getc	mon_getc
+#define putc	mon_putc
+#define udelay	mon_udelay
+#define malloc	mon_malloc
+#define WATCHDOG_RESET() {						\
+			*(ushort *)(CFG_IMMR + 0x1000E) = 0x556c;	\
+			*(ushort *)(CFG_IMMR + 0x1000E) = 0xaa39;	\
+		}
+#endif	/* STANDALONE */
+
+static int debug = 1;
+
+#define DEBUG(fmt, args...)	 {					\
+	if(debug != 0) {						\
+		printf("[%s %d %s]: ",__FILE__,__LINE__,__FUNCTION__);	\
+		printf(fmt, ##args);					\
+	}								\
+}
+
+#define CPM_CR_IDMA1_SBLOCK  (0x14)
+#define CPM_CR_IDMA2_SBLOCK  (0x15)
+#define CPM_CR_IDMA3_SBLOCK  (0x16)
+#define CPM_CR_IDMA4_SBLOCK  (0x17)
+#define CPM_CR_IDMA1_PAGE    (0x07)
+#define CPM_CR_IDMA2_PAGE    (0x08)
+#define CPM_CR_IDMA3_PAGE    (0x09)
+#define CPM_CR_IDMA4_PAGE    (0x0a)
+#define PROFF_IDMA1_BASE     ((uint)0x87fe)
+#define PROFF_IDMA2_BASE     ((uint)0x88fe)
+#define PROFF_IDMA3_BASE     ((uint)0x89fe)
+#define PROFF_IDMA4_BASE     ((uint)0x8afe)
+
+#define CPM_CR_INIT_TRX     ((ushort)0x0000)
+#define CPM_CR_FLG  ((ushort)0x0001)
+
+#define mk_cr_cmd(PG, SBC, MCN, OP) \
+    ((PG << 26) | (SBC << 21) | (MCN << 6) | OP)
+
+
+#pragma pack(1)
+typedef struct ibdbits {
+	unsigned b_valid:1;
+	unsigned b_resv1:1;
+	unsigned b_wrap:1;
+	unsigned b_interrupt:1;
+	unsigned b_last:1;
+	unsigned b_resv2:1;
+	unsigned b_cm:1;
+	unsigned b_resv3:2;
+	unsigned b_sdn:1;
+	unsigned b_ddn:1;
+	unsigned b_dgbl:1;
+	unsigned b_dbo:2;
+	unsigned b_resv4:1;
+	unsigned b_ddtb:1;
+	unsigned b_resv5:2;
+	unsigned b_sgbl:1;
+	unsigned b_sbo:2;
+	unsigned b_resv6:1;
+	unsigned b_sdtb:1;
+	unsigned b_resv7:9;
+} ibdbits_t;
+
+#pragma pack(1)
+typedef union ibdbitsu {
+	ibdbits_t b;
+	uint i;
+} ibdbitsu_t;
+
+#pragma pack(1)
+typedef struct idma_buf_desc {
+	ibdbitsu_t ibd_bits;		/* Status and Control */
+	uint ibd_datlen;		/* Data length in buffer */
+	uint ibd_sbuf;			/* Source buffer addr in host mem */
+	uint ibd_dbuf;			/* Destination buffer addr in host mem */
+} ibd_t;
+
+
+#pragma pack(1)
+typedef struct dcmbits {
+	unsigned b_fb:1;
+	unsigned b_lp:1;
+	unsigned b_resv1:3;
+	unsigned b_tc2:1;
+	unsigned b_resv2:1;
+	unsigned b_wrap:3;
+	unsigned b_sinc:1;
+	unsigned b_dinc:1;
+	unsigned b_erm:1;
+	unsigned b_dt:1;
+	unsigned b_sd:2;
+} dcmbits_t;
+
+#pragma pack(1)
+typedef union dcmbitsu {
+	dcmbits_t b;
+	ushort i;
+} dcmbitsu_t;
+
+#pragma pack(1)
+typedef struct pram_idma {
+	ushort pi_ibase;
+	dcmbitsu_t pi_dcmbits;
+	ushort pi_ibdptr;
+	ushort pi_dprbuf;
+	ushort pi_bufinv;		/* internal to CPM */
+	ushort pi_ssmax;
+	ushort pi_dprinptr;		/* internal to CPM */
+	ushort pi_sts;
+	ushort pi_dproutptr;		/* internal to CPM */
+	ushort pi_seob;
+	ushort pi_deob;
+	ushort pi_dts;
+	ushort pi_retadd;
+	ushort pi_resv1;		/* internal to CPM */
+	uint pi_bdcnt;
+	uint pi_sptr;
+	uint pi_dptr;
+	uint pi_istate;
+} pram_idma_t;
+
+
+volatile immap_t *immap = (immap_t *) CFG_IMMR;
+volatile ibd_t *bdf;
+volatile pram_idma_t *piptr;
+
+volatile int dmadone;
+volatile int *dmadonep = &dmadone;
+void dmadone_handler (void *);
+
+int idma_init (void);
+void idma_start (int, int, int, uint, uint, int);
+uint dpalloc (uint, uint);
+
+
+uint dpinit_done = 0;
+
+
+#ifdef STANDALONE
+int ctrlc (void)
+{
+	if (mon_tstc()) {
+		switch (mon_getc ()) {
+		case 0x03:		/* ^C - Control C */
+			return 1;
+		default:
+			break;
+		}
+	}
+	return 0;
+}
+void * memset(void * s,int c,size_t count)
+{
+	char *xs = (char *) s;
+	while (count--)
+		*xs++ = c;
+	return s;
+}
+int memcmp(const void * cs,const void * ct,size_t count)
+{
+	const unsigned char *su1, *su2;
+	int res = 0;
+	for( su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--)
+		if ((res = *su1 - *su2) != 0)
+			break;
+	return res;
+}
+#endif	/* STANDALONE */
+
+#ifdef STANDALONE
+int mem_to_mem_idma2intr (bd_t * bd, int argc, char *argv[])
+#else
+int do_idma (bd_t * bd, int argc, char *argv[])
+#endif	/* STANDALONE */
+{
+	int i;
+
+	dpinit_done = 0;
+
+	idma_init ();
+
+	DEBUG ("Installing dma handler\n");
+	mon_install_hdlr (7, dmadone_handler, (void *) bdf);
+
+	memset ((void *) 0x100000, 'a', 512);
+	memset ((void *) 0x200000, 'b', 512);
+
+	for (i = 0; i < 32; i++) {
+		printf ("Startin IDMA, iteration=%d\n", i);
+		idma_start (1, 1, 512, 0x100000, 0x200000, 3);
+	}
+
+	DEBUG ("Uninstalling dma handler\n");
+	mon_free_hdlr (7);
+
+	return 0;
+}
+
+void
+idma_start (int sinc, int dinc, int sz, uint sbuf, uint dbuf, int ttype)
+{
+	/* ttype is for M-M, M-P, P-M or P-P: not used for now */
+
+	piptr->pi_istate = 0;	/* manual says: clear it before every START_IDMA */
+	piptr->pi_dcmbits.b.b_resv1 = 0;
+
+	if (sinc == 1)
+		piptr->pi_dcmbits.b.b_sinc = 1;
+	else
+		piptr->pi_dcmbits.b.b_sinc = 0;
+
+	if (dinc == 1)
+		piptr->pi_dcmbits.b.b_dinc = 1;
+	else
+		piptr->pi_dcmbits.b.b_dinc = 0;
+
+	piptr->pi_dcmbits.b.b_erm = 0;
+	piptr->pi_dcmbits.b.b_sd = 0x00;	/* M-M */
+
+	bdf->ibd_sbuf = sbuf;
+	bdf->ibd_dbuf = dbuf;
+	bdf->ibd_bits.b.b_cm = 0;
+	bdf->ibd_bits.b.b_interrupt = 1;
+	bdf->ibd_bits.b.b_wrap = 1;
+	bdf->ibd_bits.b.b_last = 1;
+	bdf->ibd_bits.b.b_sdn = 0;
+	bdf->ibd_bits.b.b_ddn = 0;
+	bdf->ibd_bits.b.b_dgbl = 0;
+	bdf->ibd_bits.b.b_ddtb = 0;
+	bdf->ibd_bits.b.b_sgbl = 0;
+	bdf->ibd_bits.b.b_sdtb = 0;
+	bdf->ibd_bits.b.b_dbo = 1;
+	bdf->ibd_bits.b.b_sbo = 1;
+	bdf->ibd_bits.b.b_valid = 1;
+	bdf->ibd_datlen = 512;
+
+	*dmadonep = 0;
+
+	immap->im_sdma.sdma_idmr2 = (uchar) 0xf;
+
+	immap->im_cpm.cp_cpcr = mk_cr_cmd (CPM_CR_IDMA2_PAGE,
+					   CPM_CR_IDMA2_SBLOCK, 0x0,
+					   0x9) | 0x00010000;
+
+	while (*dmadonep != 1) {
+		if (ctrlc ()) {
+			DEBUG ("\nInterrupted waiting for DMA interrupt.\n");
+			goto done;
+		}
+		printf ("Waiting for DMA interrupt (dmadone=%d b_valid = %d)...\n",
+			dmadone, bdf->ibd_bits.b.b_valid);
+		udelay (1000000);
+	}
+	printf ("DMA complete notification received!\n");
+
+  done:
+	DEBUG ("memcmp(0x%08x, 0x%08x, 512) = %d\n",
+		sbuf, dbuf, memcmp ((void *) sbuf, (void *) dbuf, 512));
+
+	return;
+}
+
+#define MAX_INT_BUFSZ	64
+#define DCM_WRAP	 0	/* MUST be consistant with MAX_INT_BUFSZ */
+
+int idma_init (void)
+{
+	uint memaddr;
+
+	immap->im_cpm.cp_rccr &= ~0x00F3FFFF;
+	immap->im_cpm.cp_rccr |= 0x00A00A00;
+
+	memaddr = dpalloc (sizeof (pram_idma_t), 64);
+
+	*(volatile ushort *) &immap->im_dprambase[PROFF_IDMA2_BASE] = memaddr;
+	piptr = (volatile pram_idma_t *) ((uint) (immap) + memaddr);
+
+	piptr->pi_resv1 = 0;		/* manual says: clear it */
+	piptr->pi_dcmbits.b.b_fb = 0;
+	piptr->pi_dcmbits.b.b_lp = 1;
+	piptr->pi_dcmbits.b.b_erm = 0;
+	piptr->pi_dcmbits.b.b_dt = 0;
+
+	memaddr = (uint) dpalloc (sizeof (ibd_t), 64);
+	piptr->pi_ibase = piptr->pi_ibdptr = (volatile short) memaddr;
+	bdf = (volatile ibd_t *) ((uint) (immap) + memaddr);
+	bdf->ibd_bits.b.b_valid = 0;
+
+	memaddr = (uint) dpalloc (64, 64);
+	piptr->pi_dprbuf = (volatile ushort) memaddr;
+	piptr->pi_dcmbits.b.b_wrap = 4;
+	piptr->pi_ssmax = 32;
+
+	piptr->pi_sts = piptr->pi_ssmax;
+	piptr->pi_dts = piptr->pi_ssmax;
+
+	return 1;
+}
+
+void dmadone_handler (void *arg)
+{
+	immap->im_sdma.sdma_idmr2 = (uchar) 0x0;
+
+	*dmadonep = 1;
+
+	return;
+}
+
+
+static uint dpbase = 0;
+
+uint dpalloc (uint size, uint align)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	volatile immap_t *immr = (immap_t *) CFG_IMMR;
+	uint retloc;
+	uint align_mask, off;
+	uint savebase;
+
+	/* Pointer to initial global data area */
+
+	if (dpinit_done == 0) {
+		dpbase = gd->dp_alloc_base;
+		dpinit_done = 1;
+	}
+
+	align_mask = align - 1;
+	savebase = dpbase;
+
+	if ((off = (dpbase & align_mask)) != 0)
+		dpbase += (align - off);
+
+	if ((off = size & align_mask) != 0)
+		size += align - off;
+
+	if ((dpbase + size) >= gd->dp_alloc_top) {
+		dpbase = savebase;
+		printf ("dpalloc: ran out of dual port ram!");
+		return 0;
+	}
+
+	retloc = dpbase;
+	dpbase += size;
+
+	memset ((void *) &immr->im_dprambase[retloc], 0, size);
+
+	return (retloc);
+}