# HG changeset patch # User Michael Spacefalcon # Date 1367205660 0 # Node ID da98dc08f57576cce60f49d8d622645880cbfe47 # Parent 9beb566ded04fbc83cb888619e18576ee0be2f1a loadagent: beginning to lay the foundation diff -r 9beb566ded04 -r da98dc08f575 .hgignore --- a/.hgignore Sun Apr 28 17:36:07 2013 +0000 +++ b/.hgignore Mon Apr 29 03:21:00 2013 +0000 @@ -1,6 +1,10 @@ -re:^toolchain/binutils-2.21.1/ -re:^toolchain/binutils-build/ -re:^toolchain/gcc-4.5.4/ -re:^toolchain/gcc-build/ -re:^toolchain/newlib-2.0.0/ -re:^toolchain/newlib-build/ +syntax: regexp + +\.[oa]$ + +^toolchain/binutils-2.21.1/ +^toolchain/binutils-build/ +^toolchain/gcc-4.5.4/ +^toolchain/gcc-build/ +^toolchain/newlib-2.0.0/ +^toolchain/newlib-build/ diff -r 9beb566ded04 -r da98dc08f575 loadagent/halt.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/halt.h Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,10 @@ +/* + * In some error cases in our loadagent code we have no better course + * of action available than to halt in a tight loop. We define _exit() + * to do the latter. We have defined some codes for the argument value + * that goes into R0; if you manage to hook up JTAG and get it to work, + * you might be able to see what went wrong. + */ + +#define HALTCODE_MAINEXITED 0x40 +#define HALTCODE_INVALIDUART 0x41 diff -r 9beb566ded04 -r da98dc08f575 loadagent/libnosys/Makefile --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/libnosys/Makefile Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,16 @@ +CC= arm-elf-gcc +CFLAGS= -Os -mcpu=arm7tdmi -marm -mno-thumb-interwork +AR= arm-elf-ar +RANLIB= arm-elf-ranlib + +OBJS= close.o fstat.o getpid.o isatty.o kill.o lseek.o open.o read.o sbrk.o \ + stat.o unlink.o write.o + +all: libnosys.a + +libnosys.a: ${OBJS} + ${AR} cru $@ ${OBJS} + ${RANLIB} $@ + +clean: + rm -f *.[oa] *errs diff -r 9beb566ded04 -r da98dc08f575 loadagent/libnosys/close.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/libnosys/close.c Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,25 @@ +/* close.c -- close a file descriptor. + * + * Copyright (c) 1995 Cygnus Support + * + * The authors hereby grant permission to use, copy, modify, distribute, + * and license this software and its documentation for any purpose, provided + * that existing copyright notices are retained in all copies and that this + * notice is included verbatim in any distributions. No written agreement, + * license, or royalty fee is required for any of the authorized uses. + * Modifications to this software may be copyrighted by their authors + * and need not follow the licensing terms described here, provided that + * the new terms are clearly indicated on the first page of each file where + * they apply. + */ +#include "glue.h" + +/* + * close -- We don't need to do anything, but pretend we did. + */ +int +_DEFUN (_close ,(fd), + int fd) +{ + return (0); +} diff -r 9beb566ded04 -r da98dc08f575 loadagent/libnosys/fstat.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/libnosys/fstat.c Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,30 @@ +/* fstat.c -- get status of a file. + * + * Copyright (c) 1995 Cygnus Support + * + * The authors hereby grant permission to use, copy, modify, distribute, + * and license this software and its documentation for any purpose, provided + * that existing copyright notices are retained in all copies and that this + * notice is included verbatim in any distributions. No written agreement, + * license, or royalty fee is required for any of the authorized uses. + * Modifications to this software may be copyrighted by their authors + * and need not follow the licensing terms described here, provided that + * the new terms are clearly indicated on the first page of each file where + * they apply. + */ +#include +#include "glue.h" + +/* + * fstat -- Since we have no file system, we just return an error. + */ +int +_DEFUN (_fstat, (fd, buf), + int fd _AND + struct stat *buf) +{ + buf->st_mode = S_IFCHR; /* Always pretend to be a tty */ + buf->st_blksize = 0; + + return (0); +} diff -r 9beb566ded04 -r da98dc08f575 loadagent/libnosys/getpid.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/libnosys/getpid.c Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,25 @@ +/* getpid.c -- get the current process id. + * + * Copyright (c) 1995 Cygnus Support + * + * The authors hereby grant permission to use, copy, modify, distribute, + * and license this software and its documentation for any purpose, provided + * that existing copyright notices are retained in all copies and that this + * notice is included verbatim in any distributions. No written agreement, + * license, or royalty fee is required for any of the authorized uses. + * Modifications to this software may be copyrighted by their authors + * and need not follow the licensing terms described here, provided that + * the new terms are clearly indicated on the first page of each file where + * they apply. + */ +#include "glue.h" + +/* + * getpid -- only one process, so just return 1. + */ +int +_DEFUN (_getpid, (), + ) +{ + return __MYPID; +} diff -r 9beb566ded04 -r da98dc08f575 loadagent/libnosys/glue.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/libnosys/glue.h Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,31 @@ +/* glue.h -- common definitions for "glue" fucntions. + * + * Copyright (c) 1995 Cygnus Support + * + * The authors hereby grant permission to use, copy, modify, distribute, + * and license this software and its documentation for any purpose, provided + * that existing copyright notices are retained in all copies and that this + * notice is included verbatim in any distributions. No written agreement, + * license, or royalty fee is required for any of the authorized uses. + * Modifications to this software may be copyrighted by their authors + * and need not follow the licensing terms described here, provided that + * the new terms are clearly indicated on the first page of each file where + * they apply. + */ +#include <_ansi.h> + +#ifndef NULL +# define NULL 0 +#endif + +#ifdef __NO_UNDERSCORE__ +# define _end end +# define _exit exit +#endif + +extern char _end[]; /* _end is set in the linker command file */ + +/* only one prcess support, as this is OS dependant */ +#define __MYPID 1 + + diff -r 9beb566ded04 -r da98dc08f575 loadagent/libnosys/isatty.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/libnosys/isatty.c Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,27 @@ +/* isatty.c -- chek the terminal device. + * + * Copyright (c) 1995 Cygnus Support + * + * The authors hereby grant permission to use, copy, modify, distribute, + * and license this software and its documentation for any purpose, provided + * that existing copyright notices are retained in all copies and that this + * notice is included verbatim in any distributions. No written agreement, + * license, or royalty fee is required for any of the authorized uses. + * Modifications to this software may be copyrighted by their authors + * and need not follow the licensing terms described here, provided that + * the new terms are clearly indicated on the first page of each file where + * they apply. + */ +#include "glue.h" + +/* + * isatty -- returns 1 if connected to a terminal device, + * returns 0 if not. Since we're hooked up to a + * serial port, we'll say yes _AND return a 1. + */ +int +_DEFUN (_isatty, (fd), + int fd) +{ + return (1); +} diff -r 9beb566ded04 -r da98dc08f575 loadagent/libnosys/kill.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/libnosys/kill.c Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,28 @@ +/* kill.c -- remove a process. + * + * Copyright (c) 1995 Cygnus Support + * + * The authors hereby grant permission to use, copy, modify, distribute, + * and license this software and its documentation for any purpose, provided + * that existing copyright notices are retained in all copies and that this + * notice is included verbatim in any distributions. No written agreement, + * license, or royalty fee is required for any of the authorized uses. + * Modifications to this software may be copyrighted by their authors + * and need not follow the licensing terms described here, provided that + * the new terms are clearly indicated on the first page of each file where + * they apply. + */ +#include "glue.h" + +/* + * kill -- go out via exit... + */ +int +_DEFUN (_kill, (pid, sig), + int pid _AND + int sig) +{ + if(pid == __MYPID) + _exit(sig); + return 0; +} diff -r 9beb566ded04 -r da98dc08f575 loadagent/libnosys/lseek.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/libnosys/lseek.c Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,31 @@ +/* lseek.c -- move read/write pointer. + * + * Copyright (c) 1995 Cygnus Support + * + * The authors hereby grant permission to use, copy, modify, distribute, + * and license this software and its documentation for any purpose, provided + * that existing copyright notices are retained in all copies and that this + * notice is included verbatim in any distributions. No written agreement, + * license, or royalty fee is required for any of the authorized uses. + * Modifications to this software may be copyrighted by their authors + * and need not follow the licensing terms described here, provided that + * the new terms are clearly indicated on the first page of each file where + * they apply. + */ +#include +#include +#include "glue.h" + +/* + * lseek -- Since a serial port is non-seekable, we return an error. + */ +off_t +_DEFUN (_lseek, (fd, offset, whence), + int fd _AND + off_t offset _AND + int whence) +{ + errno = ESPIPE; + return ((off_t)-1); +} + diff -r 9beb566ded04 -r da98dc08f575 loadagent/libnosys/open.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/libnosys/open.c Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,31 @@ +/* open.c -- open a file. + * + * Copyright (c) 1995 Cygnus Support + * + * The authors hereby grant permission to use, copy, modify, distribute, + * and license this software and its documentation for any purpose, provided + * that existing copyright notices are retained in all copies and that this + * notice is included verbatim in any distributions. No written agreement, + * license, or royalty fee is required for any of the authorized uses. + * Modifications to this software may be copyrighted by their authors + * and need not follow the licensing terms described here, provided that + * the new terms are clearly indicated on the first page of each file where + * they apply. + */ +#include +#include "glue.h" + +/* + * open -- open a file descriptor. We don't have a filesystem, so + * we return an error. + */ +int +_DEFUN (_open, (buf, flags, mode), + const char *buf _AND + int flags _AND + int mode) +{ + errno = EIO; + return (-1); +} + diff -r 9beb566ded04 -r da98dc08f575 loadagent/libnosys/read.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/libnosys/read.c Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,30 @@ +/* read.c -- read bytes from a input device. + * + * Copyright (c) 1995 Cygnus Support + * + * The authors hereby grant permission to use, copy, modify, distribute, + * and license this software and its documentation for any purpose, provided + * that existing copyright notices are retained in all copies and that this + * notice is included verbatim in any distributions. No written agreement, + * license, or royalty fee is required for any of the authorized uses. + * Modifications to this software may be copyrighted by their authors + * and need not follow the licensing terms described here, provided that + * the new terms are clearly indicated on the first page of each file where + * they apply. + */ +#include "glue.h" + +/* + * read -- read bytes from the serial port. Ignore fd, since + * we only have stdin. + * + * In the present version changed to always return EOF indication. + */ +int +_DEFUN (_read, (fd, buf, nbytes), + int fd _AND + char *buf _AND + int nbytes) +{ + return (0); +} diff -r 9beb566ded04 -r da98dc08f575 loadagent/libnosys/sbrk.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/libnosys/sbrk.c Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,55 @@ +/* sbrk.c -- allocate memory dynamically. + * + * Copyright (c) 1995,1996 Cygnus Support + * + * The authors hereby grant permission to use, copy, modify, distribute, + * and license this software and its documentation for any purpose, provided + * that existing copyright notices are retained in all copies and that this + * notice is included verbatim in any distributions. No written agreement, + * license, or royalty fee is required for any of the authorized uses. + * Modifications to this software may be copyrighted by their authors + * and need not follow the licensing terms described here, provided that + * the new terms are clearly indicated on the first page of each file where + * they apply. + */ +#include +#include "glue.h" + +/* just in case, most boards have at least some memory */ +#ifndef RAMSIZE +# define RAMSIZE (caddr_t)0x100000 +#endif + +char *heap_ptr; + +/* + * sbrk -- changes heap size size. Get nbytes more + * RAM. We just increment a pointer in what's + * left of memory on the board. + */ +char * +_sbrk (nbytes) + int nbytes; +{ + char *base; + + if (!heap_ptr) + heap_ptr = (char *)&_end; + base = heap_ptr; + heap_ptr += nbytes; + + return base; +/* FIXME: We really want to make sure we don't run out of RAM, but this + * isn't very portable. + */ +#if 0 + if ((RAMSIZE - heap_ptr - nbytes) >= 0) { + base = heap_ptr; + heap_ptr += nbytes; + return (base); + } else { + errno = ENOMEM; + return ((char *)-1); + } +#endif +} diff -r 9beb566ded04 -r da98dc08f575 loadagent/libnosys/stat.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/libnosys/stat.c Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,30 @@ +/* stat.c -- Get the status of a file. + * + * Copyright (c) 1995 Cygnus Support + * + * The authors hereby grant permission to use, copy, modify, distribute, + * and license this software and its documentation for any purpose, provided + * that existing copyright notices are retained in all copies and that this + * notice is included verbatim in any distributions. No written agreement, + * license, or royalty fee is required for any of the authorized uses. + * Modifications to this software may be copyrighted by their authors + * and need not follow the licensing terms described here, provided that + * the new terms are clearly indicated on the first page of each file where + * they apply. + */ +#include +#include +#include "glue.h" + +/* + * stat -- Since we have no file system, we just return an error. + */ +int +_DEFUN (_stat, (path, buf), + const char *path _AND + struct stat *buf) +{ + errno = EIO; + return (-1); +} + diff -r 9beb566ded04 -r da98dc08f575 loadagent/libnosys/unlink.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/libnosys/unlink.c Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,28 @@ +/* unlink.c -- remove a file. + * + * Copyright (c) 1995 Cygnus Support + * + * The authors hereby grant permission to use, copy, modify, distribute, + * and license this software and its documentation for any purpose, provided + * that existing copyright notices are retained in all copies and that this + * notice is included verbatim in any distributions. No written agreement, + * license, or royalty fee is required for any of the authorized uses. + * Modifications to this software may be copyrighted by their authors + * and need not follow the licensing terms described here, provided that + * the new terms are clearly indicated on the first page of each file where + * they apply. + */ +#include +#include "glue.h" + +/* + * unlink -- since we have no file system, + * we just return an error. + */ +int +_DEFUN (_unlink, (path), + char * path) +{ + errno = EIO; + return (-1); +} diff -r 9beb566ded04 -r da98dc08f575 loadagent/libnosys/write.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/libnosys/write.c Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,39 @@ +/* write.c -- write bytes to an output device. + * + * Copyright (c) 1995 Cygnus Support + * + * The authors hereby grant permission to use, copy, modify, distribute, + * and license this software and its documentation for any purpose, provided + * that existing copyright notices are retained in all copies and that this + * notice is included verbatim in any distributions. No written agreement, + * license, or royalty fee is required for any of the authorized uses. + * Modifications to this software may be copyrighted by their authors + * and need not follow the licensing terms described here, provided that + * the new terms are clearly indicated on the first page of each file where + * they apply. + */ +#include "glue.h" + +extern int _EXFUN (serial_out, (char x)); + +/* + * write -- write bytes to the serial port. Ignore fd, since + * stdout and stderr are the same. Since we have no filesystem, + * open will only return an error. + */ +int +_DEFUN (_write, (fd, buf, nbytes), + int fd _AND + char *buf _AND + int nbytes) +{ + int i; + + for (i = 0; i < nbytes; i++) { + if (*(buf + i) == '\n') { + serial_out ('\r'); + } + serial_out (*(buf + i)); + } + return (nbytes); +} diff -r 9beb566ded04 -r da98dc08f575 loadagent/main.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/main.c Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,31 @@ +/* + * FreeCalypso loadagent main() function lives here + */ + +#include "types.h" +#include "romvars.h" +#include "ns16550.h" +#include "halt.h" + +#include + +extern struct boot_rom_vars rom_vars; + +struct ns16550_regs *uart_base; +char *uart_name; + +uart_select_init() +{ + switch (rom_vars.uart_id) { + case 0: + uart_base = (struct ns16550_regs *) 0xFFFF5800; + uart_name = "MODEM"; + break; + case 1: + uart_base = (struct ns16550_regs *) 0xFFFF5000; + uart_name = "IrDA"; + break; + default: + _exit(HALTCODE_INVALIDUART); + } +} diff -r 9beb566ded04 -r da98dc08f575 loadagent/ns16550.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/ns16550.h Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,101 @@ +#ifndef __NS16550_H +#define __NS16550_H + +/* NS16550 registers */ +#define NS16550_RBR 0 +#define NS16550_THR 0 +#define NS16550_IER 1 +#define NS16550_IIR 2 +#define NS16550_FCR 2 +#define NS16550_LCR 3 +#define NS16550_MCR 4 +#define NS16550_LSR 5 +#define NS16550_MSR 6 +#define NS16550_SCR 7 +#define NS16550_DLL 0 +#define NS16550_DLM 1 + +#ifndef __ASSEMBLER__ +#include "types.h" + +struct ns16550_regs { + u8 datareg; + u8 ier; + u8 iir_fcr; + u8 lcr; + u8 mcr; + u8 lsr; + u8 msr; + u8 scr; +}; +#endif + +/* IER bits */ +#define NS16550_IER_EDSSI 0x08 +#define NS16550_IER_ELSI 0x04 +#define NS16550_IER_ETBEI 0x02 +#define NS16550_IER_ERBFI 0x01 + +/* IIR bits */ +#define NS16550_IIR_FIFOEN 0xC0 +#define NS16550_IIR_INTID 0x0E +#define NS16550_IIR_INT_RLS 0x06 +#define NS16550_IIR_INT_RDA 0x04 +#define NS16550_IIR_INT_CTO 0x0C +#define NS16550_IIR_INT_THRE 0x02 +#define NS16550_IIR_INT_MODEM 0x00 +#define NS16550_IIR_INTPEND 0x01 + +/* FCR bits */ + +#define NS16550_FCR_RXTR 0xC0 +#define NS16550_FCR_RXTR_1 0x00 +#define NS16550_FCR_RXTR_4 0x40 +#define NS16550_FCR_RXTR_8 0x80 +#define NS16550_FCR_RXTR_14 0xC0 +#define NS16550_FCR_DMAMODE 0x08 +#define NS16550_FCR_TXRST 0x04 +#define NS16550_FCR_RXRST 0x02 +#define NS16550_FCR_FIFOEN 0x01 + +/* LCR bits */ +#define NS16550_LCR_DLAB 0x80 +#define NS16550_LCR_BREAK 0x40 +#define NS16550_LCR_STICK 0x20 +#define NS16550_LCR_EPS 0x10 +#define NS16550_LCR_PEN 0x08 +#define NS16550_LCR_STB 0x04 +#define NS16550_LCR_WLS 0x03 +#define NS16550_LCR_WLS_5 0x00 +#define NS16550_LCR_WLS_6 0x01 +#define NS16550_LCR_WLS_7 0x02 +#define NS16550_LCR_WLS_8 0x03 + +/* MCR bits */ +#define NS16550_MCR_LOOP 0x10 +#define NS16550_MCR_OUT2 0x08 +#define NS16550_MCR_OUT1 0x04 +#define NS16550_MCR_RTS 0x02 +#define NS16550_MCR_DTR 0x01 + +/* LSR bits */ +#define NS16550_LSR_ERR 0x80 +#define NS16550_LSR_TEMP 0x40 +#define NS16550_LSR_THRE 0x20 +#define NS16550_LSR_BI 0x10 +#define NS16550_LSR_FE 0x08 +#define NS16550_LSR_PE 0x04 +#define NS16550_LSR_OE 0x02 +#define NS16550_LSR_DR 0x01 + +/* MSR bits */ +#define NS16550_MSR_DCD 0x80 +#define NS16550_MSR_RI 0x40 +#define NS16550_MSR_DSR 0x20 +#define NS16550_MSR_CTS 0x10 +#define NS16550_MSR_DDCD 0x08 +#define NS16550_MSR_TERI 0x04 +#define NS16550_MSR_DDSR 0x02 +#define NS16550_MSR_DCTS 0x01 + +#endif /* __NS16550_H */ diff -r 9beb566ded04 -r da98dc08f575 loadagent/romvars.h --- a/loadagent/romvars.h Sun Apr 28 17:36:07 2013 +0000 +++ b/loadagent/romvars.h Mon Apr 29 03:21:00 2013 +0000 @@ -13,6 +13,11 @@ * based on the disassembly of the boot ROM. */ +#ifndef __ROMVARS_H +#define __ROMVARS_H + +#include "types.h" + struct boot_rom_vars { u8 baud_rate_code; u8 pad1[3]; @@ -27,3 +32,5 @@ u16 pad2; u32 branch_addr; }; + +#endif /* include guard */ diff -r 9beb566ded04 -r da98dc08f575 loadagent/serio.S --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/serio.S Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,26 @@ +#include "ns16550.h" + +@ this module implements the elementary serial I/O operations + + .text + .code 32 + .global serial_out +serial_out: + ldr r1, =uart_base + ldr r2, [r1] +1: ldrb r3, [r2, #NS16550_LSR] + tst r3, #NS16550_LSR_THRE + beq 1b + strb r0, [r2, #NS16550_THR] + bx lr + + .global serial_in_poll +serial_in_poll: + ldr r1, =uart_base + ldr r2, [r1] + ldrb r3, [r2, #NS16550_LSR] + tst r3, #NS16550_LSR_DR + mvneq r0, #1 + bxeq lr + ldrb r0, [r2, #NS16550_RBR] + bx lr diff -r 9beb566ded04 -r da98dc08f575 loadagent/serwait.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/serwait.c Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,14 @@ +/* this C module is a wrapper around serio.S */ +/* we implement serial_in_wait() as a C wrapper around serial_in_poll() */ + +extern int serial_in_poll(); + +int serial_in_wait() +{ + register int c; + + do + c = serial_in_poll(); + while (c < 0); + return c; +} diff -r 9beb566ded04 -r da98dc08f575 loadagent/types.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/types.h Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,18 @@ +/* + * I personally like the u8/u16/u32 types, but I don't see them + * being defined in any of the headers provided by newlib. + * So we'll define them ourselves. + */ + +#ifndef __OUR_OWN_TYPES_H +#define __OUR_OWN_TYPES_H + +typedef unsigned char u8; +typedef unsigned short u16; +typedef unsigned int u32; + +typedef signed char s8; +typedef signed short s16; +typedef signed int s32; + +#endif /* include guard */