diff options
Diffstat (limited to 'src/stream')
| -rw-r--r-- | src/stream/Config.lb | 5 | ||||
| -rw-r--r-- | src/stream/serial_stream.c | 92 |
2 files changed, 97 insertions, 0 deletions
diff --git a/src/stream/Config.lb b/src/stream/Config.lb index b146c0451e..0385d63028 100644 --- a/src/stream/Config.lb +++ b/src/stream/Config.lb @@ -2,6 +2,7 @@ uses CONFIG_ROM_STREAM uses CONFIG_IDE_STREAM uses CONFIG_FS_STREAM uses CONFIG_IDE +uses CONFIG_SERIAL_STREAM if CONFIG_ROM_STREAM object rom_stream.o @@ -16,3 +17,7 @@ if CONFIG_FS_STREAM object fs_stream.o dir fs end + +if CONFIG_SERIAL_STREAM + object serial_stream.o +end diff --git a/src/stream/serial_stream.c b/src/stream/serial_stream.c new file mode 100644 index 0000000000..b3af26b1db --- /dev/null +++ b/src/stream/serial_stream.c @@ -0,0 +1,92 @@ +#include <console/console.h> +#include <stdlib.h> +#include <stddef.h> +#include <stream/read_bytes.h> +#include <string.h> + +/* if they set the precompressed rom stream, they better have set a type */ +#if CONFIG_PRECOMPRESSED_ROM_STREAM && ((!CONFIG_COMPRESSED_ROM_STREAM) && (!CONFIG_COMPRESSED_ROM_STREAM_NRV2B) && (!CONFIG_COMPRESSED_ROM_STREAM_LZMA)) +#error "You set CONFIG_PRECOMPRESSED_ROM_STREAM but need to set CONFIG_COMPRESSED_ROM_STREAM (implies NRV2B, deprecated) or CONFIG_COMPRESSED_ROM_STREAM_NRV2B or CONFIG_COMPRESSED_ROM_STREAM_LZMA" +#endif + +#if (CONFIG_COMPRESSED_ROM_STREAM) || (CONFIG_COMPRESSED_ROM_STREAM_NRV2B) +#define HAVE_UNCOMPRESSER 1 +#include "../lib/nrv2b.c" +#endif + +#if (CONFIG_COMPRESSED_ROM_STREAM_LZMA) +#if HAVE_UNCOMPRESSER +#error "You're defining more than one compression type, which is not allowed (of course)" +#endif +#define HAVE_UNCOMPRESSER 1 +#include "../lib/lzma.c" +#endif + +#include "../lib/xmodem.c" + +/* Blocks of RAM for storing stream data */ +static unsigned char *stream_start = (unsigned char *) 0x02000000; +static unsigned char *stream_end; +static unsigned char *temp_start = (unsigned char *) 0x03000000; +static int stream_max_bytes = 0x00800000; + +#if HAVE_UNCOMPRESSER +static unsigned long uncompress(uint8_t *src, uint8_t *dest) +{ +#if (CONFIG_COMPRESSED_ROM_STREAM) || (CONFIG_COMPRESSED_ROM_STREAM_NRV2B) + unsigned long ilen; + return unrv2b(src, dest, &ilen); +#endif +#if (CONFIG_COMPRESSED_ROM_STREAM_LZMA) + return ulzma(src, dest); +#endif +} +#endif + +int stream_init(void) +{ + int len; + + printk_debug("serial_stream: downloading to 0x%08lx; start XMODEM transfer now!\n", temp_start); + if ((len = xmodemReceive(temp_start, stream_max_bytes)) <= 0) { + printk_debug("\nserial_stream: XMODEM transfer failed\n"); + return -1; + } + printk_debug("\nserial_stream: XMODEM transfer complete; %d bytes received\n", len); +#if HAVE_UNCOMPRESSER + printk_debug("serial_stream: uncompressing to 0x%08lx\n", stream_start); + len = uncompress((uint8_t *) temp_start, (uint8_t *) stream_start); + printk_debug("serial_stream: %d bytes uncompressed\n", len); +#else + printk_debug("serial_stream: copying to 0x%08lx\n", stream_start); + memcpy(stream_start, temp_start, len); +#endif + stream_end = stream_start + len - 1; + return 0; +} + +void stream_fini(void) +{ +} + +byte_offset_t stream_skip(byte_offset_t count) +{ + if ((stream_start + count) > stream_end) { + printk_warning("%6d:%s() - overflowed source buffer\n", + __LINE__, __FUNCTION__); + count = 0; + if (stream_start <= stream_end) { + count = (stream_end - stream_start) + 1; + } + } + stream_start += count; + return count; +} + +byte_offset_t stream_read(void *vdest, byte_offset_t count) +{ + unsigned char *old_start = stream_start; + count = stream_skip(count); + memcpy(vdest, old_start, count); + return count; +} |