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/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/rendition/vloaduc.c,v 1.10 2000/02/25 21:03:04 dawes Exp $ */
/*
* includes
*/
#include "rendition.h"
#include "v1kregs.h"
#include "v1krisc.h"
#include "vloaduc.h"
#include "vos.h"
#include "elf.h"
/*
* defines
*/
#ifdef X_LITTLE_ENDIAN
/* maybe swap word */
#define SW32(x) lswapl(x)
#define SW16(x) lswaps(x)
#else /* BIG_ENDIAN */
#define SW32(x) (x)
#define SW16(x) (x)
#endif /* #ifdef LITTLE_ENDIAN */
/*
* local function prototypes
*/
static void loadSection2board(ScrnInfoPtr pScreenInfo, int fd,
Elf32_Shdr *shdr);
static void loadSegment2board(ScrnInfoPtr pScreenInfo, int fd,
Elf32_Phdr *phdr);
static int seek_and_read_hdr(int fd, void *ptr, long int offset,
int size, int cnt);
static void mmve(ScrnInfoPtr pScreenInfo, vu32 size, vu8 *data, vu32 phys_addr);
/*
* functions
*/
/*
* int v_load_ucfile(ScrnInfoPtr pScreenInfo, char *file_name)
*
* Loads verite elf file microcode file in |name| onto the board.
* NOTE: Assumes the ucode loader is already running on the board!
*
* Returns the program's entry point, on error -1;
*/
int
v_load_ucfile(ScrnInfoPtr pScreenInfo, char *file_name)
{
/* renditionPtr pRendition = RENDITIONPTR(pScreenInfo); */
int num;
int sz;
int fd;
Elf32_Phdr *pphdr, *orig_pphdr=NULL;
Elf32_Shdr *pshdr, *orig_pshdr=NULL;
Elf32_Ehdr ehdr ;
#if 1 /* DEBUG */
ErrorF("RENDITION: Loading microcode %s\n", file_name);
#endif
/* Stop the RISC if it happends to run */
v1k_stop (pScreenInfo);
/* open file and read ELF-header */
if (-1 == (fd=open(file_name, O_RDONLY, 0))) {
ErrorF("RENDITION: Cannot open microcode %s\n", file_name);
return -1;
}
if (read(fd, &ehdr, sizeof(ehdr)) != sizeof(ehdr)) {
ErrorF("RENDITION: Cannot read microcode header %s\n", file_name);
return -1;
}
if (0 != strncmp((char *)&ehdr.e_ident[1], "ELF", 3)) {
ErrorF("RENDITION: Microcode header in %s is corrupt\n", file_name);
return -1;
}
/* read in the program header(s) */
sz=SW16(ehdr.e_phentsize);
num=SW16(ehdr.e_phnum);
if (0!=sz && 0!=num) {
orig_pphdr=pphdr=(Elf32_Phdr *)xalloc(sz*num);
if (!pphdr) {
ErrorF("RENDITION: Cannot allocate global memory (1)\n");
close(fd);
return -1;
}
if (seek_and_read_hdr(fd, pphdr, SW32(ehdr.e_phoff), sz, num)) {
ErrorF("RENDITION: Error reading microcode (1)\n");
close(fd);
return -1;
}
orig_pshdr=pshdr=(Elf32_Shdr *)0;
}
else {
orig_pphdr=pphdr=(Elf32_Phdr *)0;
/* read in the section header(s) */
sz=SW16(ehdr.e_shentsize);
num=SW16(ehdr.e_shnum);
if (0!=sz && 0!=num) {
orig_pshdr=pshdr=(Elf32_Shdr *)xalloc(sz*num);
if (!pshdr) {
ErrorF("RENDITION: Cannot allocate global memory (2)\n");
close(fd);
return -1;
}
if (seek_and_read_hdr(fd, pshdr, SW32(ehdr.e_shoff), sz, num)) {
ErrorF("RENDITION: Error reading microcode (2)\n");
close(fd);
return -1;
}
}
else
pshdr=(Elf32_Shdr *)0;
}
if (pphdr) {
do {
if (SW32(pphdr->p_type) == PT_LOAD)
loadSegment2board(pScreenInfo, fd, pphdr);
pphdr=(Elf32_Phdr *)(((char *)pphdr)+sz);
} while (--num);
xfree(orig_pphdr);
}
else {
do {
if (SW32(pshdr->sh_size) && (SW32(pshdr->sh_flags) & SHF_ALLOC)
&& ((SW32(pshdr->sh_type)==SHT_PROGBITS)
|| (SW32(pshdr->sh_type)==SHT_NOBITS)))
loadSection2board(pScreenInfo, fd, pshdr);
pshdr=(Elf32_Shdr *)(((char *)pshdr)+sz);
} while (--num) ;
xfree(orig_pshdr);
}
close(fd);
return SW32(ehdr.e_entry);
}
/*
* local functions
*/
static void
loadSection2board(ScrnInfoPtr pScreenInfo, int fd, Elf32_Shdr *shdr)
{
/* renditionPtr pRendition = RENDITIONPTR(pScreenInfo); */
ErrorF("vlib: loadSection2board not implemented yet!\n");
}
static void
loadSegment2board(ScrnInfoPtr pScreenInfo, int fd, Elf32_Phdr *phdr)
{
/* renditionPtr pRendition = RENDITIONPTR(pScreenInfo); */
vu8 *data;
vu32 offset=SW32(phdr->p_offset);
vu32 size=SW32(phdr->p_filesz);
vu32 physAddr=SW32(phdr->p_paddr);
if (lseek(fd, offset, SEEK_SET) != offset) {
ErrorF("RENDITION: Failure in loadSegmentToBoard, offset %lx\n", offset);
return;
}
data=(vu8 *)xalloc(size);
if (NULL == data){
ErrorF("RENDITION: GlobalAllocPtr couldn't allocate %x bytes", size);
return;
}
if (read(fd, data, size) != size){
ErrorF("RENDITION: v_readfile Failure, couldn't read %x bytes ", size);
return;
}
mmve(pScreenInfo, size, data, physAddr);
xfree(data);
}
static int
seek_and_read_hdr(int fd, void *ptr, long int offset, int size,
int cnt)
{
if (lseek(fd, offset, SEEK_SET) != offset)
return 1 ;
if (size*cnt != read(fd, ptr, size*cnt))
return 2 ;
return 0 ;
}
static void
mmve(ScrnInfoPtr pScreenInfo, vu32 size, vu8 *data, vu32 phys_addr)
{
renditionPtr pRendition = RENDITIONPTR(pScreenInfo);
vu8 memend;
vu32 *dataout;
vu8 *vmb=pRendition->board.vmem_base;
/* swap bytes 3<>0, 2<>1 */
memend=v_in8(pRendition->board.io_base+MEMENDIAN);
v_out8(pRendition->board.io_base+MEMENDIAN, MEMENDIAN_END);
dataout=(vu32 *)data;
/* If RISC happends to be running, be sure it is stopped */
v1k_stop(pScreenInfo);
while (size > 0) {
v_write_memory32(vmb, phys_addr, *dataout);
phys_addr+=4;
dataout++;
size-=4;
}
v_out8(pRendition->board.io_base+MEMENDIAN, memend);
}
/*
* end of file vloaduc.c
*/
|
