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<P><FONT SIZE=2 FACE="Arial">Hello,<BR>
In the PowerPC architecture and specifically a Freescale 8270 the HRCW word decides if U-boot is going to be booted<BR>
from</FONT> <FONT SIZE=2 FACE="Arial">regions: HIMEM 0xFE00_0000</FONT><FONT SIZE=2 FACE="Tahoma">—</FONT><FONT SIZE=2 FACE="Arial">0xFFFF_FFFF or LOMEM 0x0000_0000</FONT><FONT SIZE=2 FACE="Tahoma">—</FONT><FONT SIZE=2 FACE="Arial">0x01FF_FFFF. The CIP field decides the</FONT>
<BR><FONT SIZE=2 FACE="Arial">exception vectors; physical address 0xFFF<I>n_nnnn or</I> physical address 0x000<I>n_nnnn</I>.</FONT>
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<P><FONT SIZE=2 FACE="Arial">Now, in my current board range I have TEXT_BASE as 0xFFF0'0000 and CFG_FLASH_BASE as 0XFE00'0000. ( 32M )</FONT>
<BR><FONT SIZE=2 FACE="Arial">I my world that makes sense since the flash is mapped in the same range as the bootloader.</FONT>
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<P><FONT SIZE=2 FACE="Arial">The start.S file says that things will be fine as longs as we configure BR0 with the same boot ROM link address.</FONT>
<BR><FONT SIZE=2 FACE="Arial">Isn't TEXT_BASE the boot ROM link address?</FONT>
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<P><FONT SIZE=2 FACE="Arial">In one of the TQM boards ( 8260 ) I see that TEXT_BASE is 0x4000'0000 and the FLASH_BASE is 0xFF80'0000.</FONT>
<BR><FONT SIZE=2 FACE="Arial">Here the TEXT_BASE is mapped to a totally different address than HIMEM/LOMEM, the exception vectors and the </FONT>
<BR><FONT SIZE=2 FACE="Arial">FLASH_BASE - How is that possible?</FONT>
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<P><FONT SIZE=2 FACE="Arial">In other words - Could someone explain what the relationship is actually between TEXT_BASE, FLASH_BASE and the </FONT>
<BR><FONT SIZE=2 FACE="Arial">BR0 register settings are?</FONT>
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<P><FONT SIZE=2 FACE="Arial">Thx // Matias </FONT>
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