Copy some software code from the original Milkymist SoC.

Libbase should keep its RAM usage to a minimum as it is meant to be executed before the SDRAM is up and running. (Having lots of code is OK though as we XIP from the flash)
m-labs · Feb 3, 2012 · 1a4a6eb · 1a4a6eb
1 parent b5cb108
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diff --git a/software/include.mak b/software/include.mak
@@ -0,0 +1,45 @@
+# Mico32 toolchain
+#
+CROSS_COMPILER=lm32-rtems4.11-
+
+CC_normal := $(CROSS_COMPILER)gcc
+AR_normal := $(CROSS_COMPILER)ar
+AS_normal := $(CROSS_COMPILER)as
+LD_normal := $(CROSS_COMPILER)ld
+OBJCOPY_normal := $(CROSS_COMPILER)objcopy
+RANLIB_normal  := $(CROSS_COMPILER)ranlib
+
+CC_quiet = @echo " CC " $@ && $(CROSS_COMPILER)gcc
+AR_quiet = @echo " AR " $@ && $(CROSS_COMPILER)ar
+AS_quiet = @echo " AS " $@ && $(CROSS_COMPILER)as
+LD_quiet = @echo " LD " $@ && $(CROSS_COMPILER)ld
+OBJCOPY_quiet = @echo " OBJCOPY " $@ && $(CROSS_COMPILER)objcopy
+RANLIB_quiet  = @echo " RANLIB  " $@ && $(CROSS_COMPILER)ranlib
+
+ifeq ($(V),1)
+    CC = $(CC_normal)
+    AR = $(AR_normal)
+    AS = $(AS_normal)
+    LD = $(LD_normal)
+    OBJCOPY = $(OBJCOPY_normal)
+    RANLIB  = $(RANLIB_normal)
+else
+    CC = $(CC_quiet)
+    AR = $(AR_quiet)
+    AS = $(AS_quiet)
+    LD = $(LD_quiet)
+    OBJCOPY = $(OBJCOPY_quiet)
+    RANLIB  = $(RANLIB_quiet)
+endif
+
+# Toolchain options
+#
+INCLUDES_NOLIBC ?= -nostdinc -I$(MMDIR)/software/include/base
+INCLUDES = $(INCLUDES_NOLIBC) -I$(MMDIR)/software/include -I$(MMDIR)/tools
+ASFLAGS = $(INCLUDES) -nostdinc
+# later: -Wmissing-prototypes
+CFLAGS = -O9 -Wall -Wstrict-prototypes -Wold-style-definition -Wshadow \
+	 -mbarrel-shift-enabled -mmultiply-enabled -mdivide-enabled \
+	 -msign-extend-enabled -fno-builtin -fsigned-char \
+	 -fsingle-precision-constant $(INCLUDES)
+LDFLAGS = -nostdlib -nodefaultlibs
diff --git a/software/include/base/assert.h b/software/include/base/assert.h
@@ -0,0 +1,24 @@
+/*
+ * Milkymist SoC (Software)
+ * Copyright (C) 2007, 2008, 2009 Sebastien Bourdeauducq
+ * Copyright (C) Linux kernel developers
+ *
+ * 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, version 3 of the License.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ASSERT_H
+#define __ASSERT_H
+
+#define assert(x)
+
+#endif /* __ASSERT_H */
diff --git a/software/include/base/board.h b/software/include/base/board.h
@@ -0,0 +1,35 @@
+/*
+ * Milkymist SoC (Software)
+ * Copyright (C) 2007, 2008, 2009, 2010, 2011 Sebastien Bourdeauducq
+ *
+ * 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, version 3 of the License.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __BOARD_H
+#define __BOARD_H
+
+#define BOARD_NAME_LEN 32
+
+struct board_desc {
+	unsigned short int id;
+	char name[BOARD_NAME_LEN];
+	unsigned int ethernet_phyadr;
+};
+
+const struct board_desc *get_board_desc_id(unsigned short int id);
+const struct board_desc *get_board_desc(void);
+int get_pcb_revision(void);
+void get_soc_version(unsigned int *major, unsigned int *minor, unsigned int *subminor, unsigned int *rc);
+void get_soc_version_formatted(char *version);
+
+#endif /* __BOARD_H */
diff --git a/software/include/base/console.h b/software/include/base/console.h
@@ -0,0 +1,34 @@
+/*
+ * Milkymist SoC (Software)
+ * Copyright (C) 2007, 2008, 2009, 2010 Sebastien Bourdeauducq
+ *
+ * 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, version 3 of the License.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __CONSOLE_H
+#define __CONSOLE_H
+
+typedef void (*console_write_hook)(char);
+typedef char (*console_read_hook)(void);
+typedef int (*console_read_nonblock_hook)(void);
+
+void console_set_write_hook(console_write_hook h);
+void console_set_read_hook(console_read_hook r, console_read_nonblock_hook rn);
+
+char readchar(void);
+int readchar_nonblock(void);
+
+int puts(const char *s);
+void putsnonl(const char *s);
+
+#endif /* __CONSOLE_H */
diff --git a/software/include/base/ctype.h b/software/include/base/ctype.h
@@ -0,0 +1,68 @@
+/*
+ * Milkymist SoC (Software)
+ * Copyright (C) 2007, 2008, 2009 Sebastien Bourdeauducq
+ *
+ * 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, version 3 of the License.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __CTYPE_H
+#define __CTYPE_H
+
+static inline int isdigit(char c)
+{
+	return (c >= '0') && (c <= '9');
+}
+
+static inline int isxdigit(char c)
+{
+	return isdigit(c) || ((c >= 'a') && (c <= 'f')) || ((c >= 'A') && (c <= 'F'));
+}
+
+static inline int isupper(char c)
+{
+	return (c >= 'A') && (c <= 'Z');
+}
+
+static inline int islower(char c)
+{
+	return (c >= 'a') && (c <= 'z');
+}
+
+static inline unsigned char tolower(unsigned char c)
+{
+	if (isupper(c))
+		c -= 'A'-'a';
+	return c;
+}
+
+static inline unsigned char toupper(unsigned char c)
+{
+	if (islower(c))
+		c -= 'a'-'A';
+	return c;
+}
+
+static inline char isspace(unsigned char c)
+{
+	if(c == ' '
+		|| c == '\f'
+		|| c == '\n'
+		|| c == '\r'
+		|| c == '\t'
+		|| c == '\v')
+		return 1;
+
+	return 0;
+}
+
+#endif /* __CTYPE_H */
diff --git a/software/include/base/endian.h b/software/include/base/endian.h
@@ -0,0 +1,39 @@
+/*
+ * Milkymist SoC (Software)
+ * Copyright (C) 2007, 2008, 2009 Sebastien Bourdeauducq
+ * 
+ * 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, version 3 of the License.
+ * 
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ENDIAN_H
+#define __ENDIAN_H
+
+#define __LITTLE_ENDIAN 0
+#define __BIG_ENDIAN 1
+#define __BYTE_ORDER __BIG_ENDIAN
+
+static inline unsigned int le32toh(unsigned int val)
+{
+	return (val & 0xff) << 24 |
+		(val & 0xff00) << 8 |
+		(val & 0xff0000) >> 8 |
+		(val & 0xff000000) >> 24;
+}
+
+static inline unsigned short le16toh(unsigned short val)
+{
+	return (val & 0xff) << 8 |
+		(val & 0xff00) >> 8;
+}
+
+#endif /* __ENDIAN_H */
diff --git a/software/include/base/irq.h b/software/include/base/irq.h
@@ -0,0 +1,62 @@
+/*
+ * Milkymist SoC (Software)
+ * Copyright (C) 2007, 2008, 2009 Sebastien Bourdeauducq
+ *
+ * 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, version 3 of the License.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __IRQ_H
+#define __IRQ_H
+
+static inline void irq_enable(unsigned int en)
+{
+       __asm__ __volatile__("wcsr IE, %0" : : "r" (en));
+}
+
+static inline unsigned int irq_getmask(void)
+{
+       unsigned int mask;
+       __asm__ __volatile__("rcsr %0, IM" : "=r" (mask));
+       return mask;
+}
+
+static inline void irq_setmask(unsigned int mask)
+{
+       __asm__ __volatile__("wcsr IM, %0" : : "r" (mask));
+}
+
+static inline unsigned int irq_pending(void)
+{
+       unsigned int pending;
+       __asm__ __volatile__("rcsr %0, IP" : "=r" (pending));
+       return pending;
+}
+
+static inline void irq_ack(unsigned int mask)
+{
+       __asm__ __volatile__("wcsr IP, %0" : : "r" (mask));
+}
+
+static inline unsigned int irq_getie(void)
+{
+       unsigned int ie;
+       __asm__ __volatile__("rcsr %0, IE" : "=r" (ie));
+       return ie;
+}
+
+static inline void irq_setie(unsigned int ie)
+{
+       __asm__ __volatile__("wcsr IE, %0" : : "r" (ie));
+}
+
+#endif /* __IRQ_H */
diff --git a/software/include/base/limits.h b/software/include/base/limits.h
@@ -0,0 +1,25 @@
+/*
+ * Milkymist SoC (Software)
+ * Copyright (C) 2007, 2008, 2009 Sebastien Bourdeauducq
+ * Copyright (C) Linux kernel developers
+ *
+ * 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, version 3 of the License.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __LIMITS_H
+#define __LIMITS_H
+
+#define INT_MIN ((((unsigned long)-1) >> 1) + 1)
+#define INT_MAX (((unsigned long)-1) >> 1)
+
+#endif /* __LIMITS_H */
diff --git a/software/include/base/stdarg.h b/software/include/base/stdarg.h
@@ -0,0 +1,43 @@
+/*
+ * Milkymist SoC (Software)
+ * Copyright (C) 2007, 2008, 2009 Sebastien Bourdeauducq
+ * Copyright (C) Linux kernel developers
+ *
+ * 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, version 3 of the License.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __STDARG_H
+#define __STDARG_H
+
+#include <stdlib.h>
+
+#if (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 4))
+#define va_start(v,l) __builtin_va_start((v),l)
+#else
+#define va_start(v,l) __builtin_stdarg_start((v),l)
+#endif
+
+#define va_arg(ap, type) \
+	__builtin_va_arg((ap), type)
+
+#define va_end(ap) \
+	__builtin_va_end(ap)
+
+#define va_list \
+	__builtin_va_list
+
+int vsnprintf(char *buf, size_t size, const char *fmt, va_list args);
+int vscnprintf(char *buf, size_t size, const char *fmt, va_list args);
+int vsprintf(char *buf, const char *fmt, va_list args);
+
+#endif /* __STDARG_H */