* Patch by Scott McNutt, 21 Oct 2004:

  Add support for Nios-II EPCS Controller core.

* Patch by Scott McNutt, 20 Oct 2004:
  Nios-II cleanups:
  - Add sysid command (Nios-II only).
  - Locate default exception trampoline at proper offset.
  - Implement I/O routines (readb, writeb, etc)
  - Implement do_bootm_linux

4 files changed, 169 insertions, 35 deletions

diff --git a/include/asm-nios2/io.h b/include/asm-nios2/io.h
index c2c8ffc..b16a988 100644
--- a/include/asm-nios2/io.h
+++ b/include/asm-nios2/io.h
@@ -29,8 +29,61 @@
 extern unsigned char inb (unsigned char *port);
 extern unsigned short inw (unsigned short *port);
 extern unsigned inl (unsigned port);
-extern void outb (unsigned char val, unsigned char *port);
-extern void outw (unsigned short val, unsigned short *port);
-extern void outl (unsigned val, unsigned port);
+
+#define readb(addr)\
+	({unsigned char val;\
+	 asm volatile( "ldbio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
+#define readw(addr)\
+	({unsigned short val;\
+	 asm volatile( "ldhio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
+#define readl(addr)\
+	({unsigned long val;\
+	 asm volatile( "ldwio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
+#define writeb(addr,val)\
+	asm volatile ("stbio %0, 0(%1)" : : "r" (addr), "r" (val))
+#define writew(addr,val)\
+	asm volatile ("sthio %0, 0(%1)" : : "r" (addr), "r" (val))
+#define writel(addr,val)\
+	asm volatile ("stwio %0, 0(%1)" : : "r" (addr), "r" (val))
+
+#define inb(addr)	readb(addr)
+#define inw(addr)	readw(addr)
+#define inl(addr)	readl(addr)
+#define outb(addr,val)	writeb(addr,val)
+#define outw(addr,val)	writew(addr,val)
+#define outl(addr,val)	writel(addr,val)
+
+static inline void insb (unsigned long port, void *dst, unsigned long count)
+{
+	unsigned char *p = dst;
+	while (count--) *p++ = inb (port);
+}
+static inline void insw (unsigned long port, void *dst, unsigned long count)
+{
+	unsigned short *p = dst;
+	while (count--) *p++ = inw (port);
+}
+static inline void insl (unsigned long port, void *dst, unsigned long count)
+{
+	unsigned long *p = dst;
+	while (count--) *p++ = inl (port);
+}
+
+static inline void outsb (unsigned long port, const void *src, unsigned long count)
+{
+	const unsigned char *p = src;
+	while (count--) outb (*p++, port);
+}
+
+static inline void outsw (unsigned long port, const void *src, unsigned long count)
+{
+	const unsigned short *p = src;
+	while (count--) outw (*p++, port);
+}
+static inline void outsl (unsigned long port, const void *src, unsigned long count)
+{
+	const unsigned long *p = src;
+	while (count--) outl (*p++, port);
+}
 
 #endif /* __ASM_NIOS2_IO_H_ */
diff --git a/include/configs/PK1C20.h b/include/configs/PK1C20.h
index 865c69b..91e9518 100644
--- a/include/configs/PK1C20.h
+++ b/include/configs/PK1C20.h
@@ -52,7 +52,7 @@
 #define CFG_SDRAM_BASE		0x01000000	/* SDRAM base addr	*/
 #define CFG_SDRAM_SIZE		0x01000000	/* 16 MByte		*/
 #define CFG_SRAM_BASE		0x00800000	/* SRAM base addr	*/
-#define CFG_SRAM_SIZE		0x00200000	/* 2 MByte		*/
+#define CFG_SRAM_SIZE		0x00100000	/* 1 MB (only 1M mapped)*/
 
 /*------------------------------------------------------------------------
  * MEMORY ORGANIZATION
@@ -107,6 +107,14 @@
 #define CFG_CONSOLE_INFO_QUIET	1		/* Suppress console info*/
 
 /*------------------------------------------------------------------------
+ * EPCS Device -- wne CFG_NIOS_EPCSBASE is defined code/commands for
+ * epcs device access is enabled. The base address is the epcs
+ * _register_ base address, NOT THE ADDRESS OF THE MEMORY BLOCK.
+ * The register base is currently at offset 0x400 from the memory base.
+ *----------------------------------------------------------------------*/
+#define CFG_NIOS_EPCSBASE	0x00900400	/* EPCS register base	*/
+
+/*------------------------------------------------------------------------
  * DEBUG
  *----------------------------------------------------------------------*/
 #undef CONFIG_ROM_STUBS				/* Stubs not in ROM	*/
@@ -173,6 +181,36 @@
 #include <cmd_confdefs.h>
 
 /*------------------------------------------------------------------------
+ * COMPACT FLASH
+ *----------------------------------------------------------------------*/
+#if (CONFIG_COMMANDS & CFG_CMD_IDE)
+#define CONFIG_IDE_PREINIT			/* Implement id_preinit	*/
+#define CFG_IDE_MAXBUS		1		/* 1 IDE bus		*/
+#define CFG_IDE_MAXDEVICE	1		/* 1 drive per IDE bus	*/
+
+#define CFG_ATA_BASE_ADDR	0x00900800	/* ATA base addr	*/
+#define CFG_ATA_IDE0_OFFSET	0x0000		/* IDE0 offset		*/
+#define CFG_ATA_DATA_OFFSET	0x0040		/* Data IO offset	*/
+#define CFG_ATA_REG_OFFSET	0x0040		/* Register offset	*/
+#define CFG_ATA_ALT_OFFSET	0x0100		/* Alternate reg offset	*/
+#define CFG_ATA_STRIDE          4		/* Width betwix addrs	*/
+#define CONFIG_DOS_PARTITION
+
+/* Board-specific cf regs */
+#define CFG_CF_PRESENT		0x00900880	/* CF Present PIO base	*/
+#define CFG_CF_POWER		0x00900890	/* CF Power FET PIO base*/
+#define CFG_CF_ATASEL		0x009008a0	/* CF ATASEL PIO base	*/
+
+#endif /* CONFIG_COMMANDS & CFG_CMD_IDE */
+
+/*------------------------------------------------------------------------
+ * JFFS2
+ *----------------------------------------------------------------------*/
+#if (CONFIG_COMMANDS & CFG_CMD_JFFS2)
+#define CFG_JFFS_CUSTOM_PART			/* board defined part	*/
+#endif
+
+/*------------------------------------------------------------------------
  * MISC
  *----------------------------------------------------------------------*/
 #define CFG_LONGHELP				/* Provide extended help*/
@@ -185,4 +223,7 @@
 #define CFG_MEMTEST_START	CFG_SDRAM_BASE	/* Start addr for test	*/
 #define CFG_MEMTEST_END		CFG_INIT_SP - 0x00020000
 
+#define CFG_HUSH_PARSER
+#define CFG_PROMPT_HUSH_PS2	"> "
+
 #endif	/* __CONFIG_H */
diff --git a/include/nios2-epcs.h b/include/nios2-epcs.h
new file mode 100644
index 0000000..2c9522c
--- /dev/null
+++ b/include/nios2-epcs.h
@@ -0,0 +1,71 @@
+/*
+ * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
+ * Scott McNutt <smcnutt@psyent.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*************************************************************************
+ * Altera Nios-II EPCS Controller Core interfaces
+ ************************************************************************/
+
+#ifndef __NIOS2_EPCS_H__
+#define __NIOS2_EPCS_H__
+
+typedef struct epcs_devinfo_t {
+	const char 	*name;		/* Device name */
+	unsigned char	id;		/* Device silicon id */
+	unsigned char	size;		/* Total size log2(bytes)*/
+	unsigned char	num_sects;	/* Number of sectors */
+	unsigned char	sz_sect;	/* Sector size log2(bytes) */
+	unsigned char	sz_page;	/* Page size log2(bytes) */
+	unsigned char   prot_mask;	/* Protection mask */
+}epcs_devinfo_t;
+
+/* Returns the devinfo struct if EPCS device is found;
+ * NULL otherwise.
+ */
+extern epcs_devinfo_t *epcs_dev_find (void);
+
+/* Returns the number of bytes used by config data.
+ * Negative on error.
+ */
+extern int epcs_cfgsz (void);
+
+/* Erase sectors 'start' to 'end' - return zero on success
+ */
+extern int epcs_erase (unsigned start, unsigned end);
+
+/* Read 'cnt' bytes from device offset 'off' into buf at 'addr'
+ * Zero return on success
+ */
+extern int epcs_read (ulong addr, ulong off, ulong cnt);
+
+/* Write 'cnt' bytes to device offset 'off' from buf at 'addr'.
+ * Zero return on success
+ */
+extern int epcs_write (ulong addr, ulong off, ulong cnt);
+
+/* Verify 'cnt' bytes at device offset 'off' comparing with buf
+ * at 'addr'. On failure, write first invalid offset to *err.
+ * Zero return on success
+ */
+extern int epcs_verify (ulong addr, ulong off, ulong cnt, ulong *err);
+
+#endif /* __NIOS2_EPCS_H__ */
diff --git a/include/nios2-io.h b/include/nios2-io.h
index d2aeabb..d5c8652 100644
--- a/include/nios2-io.h
+++ b/include/nios2-io.h
@@ -137,37 +137,6 @@ typedef volatile struct nios_spi_t {
 #define NIOS_SPI_SSO		(1 << 10)	/* override SS_n output */
 
 /*------------------------------------------------------------------------
- * ASMI
- *----------------------------------------------------------------------*/
-typedef volatile struct nios_asmi_t {
-	unsigned	rxdata;		/* Rx data reg */
-	unsigned	txdata;		/* Tx data reg */
-	unsigned	status;		/* Status reg */
-	unsigned	control;	/* Control reg */
-	unsigned	reserved;
-	unsigned	slavesel;	/* Slave select */
-	unsigned	endofpacket;	/* End-of-packet reg */
-}nios_asmi_t;
-
-/* status register */
-#define NIOS_ASMI_ROE		(1 << 3)	/* rx overrun */
-#define NIOS_ASMI_TOE		(1 << 4)	/* tx overrun */
-#define NIOS_ASMI_TMT		(1 << 5)	/* tx empty */
-#define NIOS_ASMI_TRDY		(1 << 6)	/* tx ready */
-#define NIOS_ASMI_RRDY		(1 << 7)	/* rx ready */
-#define NIOS_ASMI_E		(1 << 8)	/* exception */
-#define NIOS_ASMI_EOP		(1 << 9)	/* eop detected */
-
-/* control register */
-#define NIOS_ASMI_IROE		(1 << 3)	/* rx overrun int ena */
-#define NIOS_ASMI_ITOE		(1 << 4)	/* tx overrun int ena */
-#define NIOS_ASMI_ITRDY		(1 << 6)	/* tx ready int ena */
-#define NIOS_ASMI_IRRDY		(1 << 7)	/* rx ready int ena */
-#define NIOS_ASMI_IE		(1 << 8)	/* exception int ena */
-#define NIOS_ASMI_IEOP		(1 << 9)	/* rx eop int ena */
-#define NIOS_ASMI_SSO		(1 << 10)	/* slave select enable */
-
-/*------------------------------------------------------------------------
  * JTAG UART
  *----------------------------------------------------------------------*/
 typedef volatile struct nios_jtag_t {