2 moved from nrv2v.c and some lines from crt0.S
11 #define GETBIT_8(bb, src, ilen) \
12 (((bb = bb & 0x7f ? bb*2 : ((unsigned)src[ilen++]*2+1)) >> 8) & 1)
14 #define GETBIT_LE16(bb, src, ilen) \
15 (bb*=2,bb&0xffff ? (bb>>16)&1 : (ilen+=2,((bb=(src[ilen-2]+src[ilen-1]*256u)*2+1)>>16)&1))
17 #define GETBIT_LE32(bb, src, ilen) \
18 (bc > 0 ? ((bb>>--bc)&1) : (bc=31,\
19 bb=*(const uint32_t *)((src)+ilen),ilen+=4,(bb>>31)&1))
21 #if ENDIAN == 0 && BITSIZE == 8
22 #define GETBIT(bb, src, ilen) GETBIT_8(bb, src, ilen)
24 #if ENDIAN == 0 && BITSIZE == 16
25 #define GETBIT(bb, src, ilen) GETBIT_LE16(bb, src, ilen)
27 #if ENDIAN == 0 && BITSIZE == 32
28 #define GETBIT(bb, src, ilen) GETBIT_LE32(bb, src, ilen)
31 static inline void print_debug_cp_run(const char *strval, uint32_t val)
34 printk_debug("%s%08x\r\n", strval, val);
36 print_debug(strval); print_debug_hex32(val); print_debug("\r\n");
40 static void copy_and_run(unsigned cpu_reset)
43 unsigned long ilen = 0, olen = 0, last_m_off = 1;
47 print_debug("Copying LinuxBIOS to ram.\r\n");
55 : "=a" (src), "=b" (dst), "=c" (olen)
57 memcpy(src, dst, olen);
61 "leal 4+_liseg, %0\n\t"
63 : "=a" (src) , "=b" (dst)
66 print_debug_cp_run("src=",(uint32_t)src);
67 print_debug_cp_run("dst=",(uint32_t)dst);
69 // dump_mem(src, src+0x100);
72 unsigned int m_off, m_len;
73 while(GETBIT(bb, src, ilen)) {
74 dst[olen++] = src[ilen++];
78 m_off = m_off*2 + GETBIT(bb, src, ilen);
79 } while (!GETBIT(bb, src, ilen));
86 m_off = (m_off - 3)*256 + src[ilen++];
87 if(m_off == 0xffffffffU)
91 m_len = GETBIT(bb, src, ilen);
92 m_len = m_len*2 + GETBIT(bb, src, ilen);
97 m_len = m_len*2 + GETBIT(bb, src, ilen);
98 } while(!GETBIT(bb, src, ilen));
101 m_len += (m_off > 0xd00);
103 const uint8_t *m_pos;
104 m_pos = dst + olen - m_off;
105 dst[olen++] = *m_pos++;
107 dst[olen++] = *m_pos++;
108 } while(--m_len > 0);
112 // dump_mem(dst, dst+0x100);
114 print_debug_cp_run("linxbios_ram.bin length = ", olen);
116 print_debug("Jumping to LinuxBIOS.\r\n");
118 if(cpu_reset == 1 ) {
120 "movl $0xffffffff, %ebp\n\t"
125 "xorl %ebp, %ebp\n\t"
131 "leal _iseg, %edi\n\t"