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<title>The two load RAM codes.</title>
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>LinuxBIOS have three parts<o:p></o:p></span></font></p>

<ol style='margin-top:0in' start=1 type=1>
 <li class=MsoNormal style='color:navy;mso-list:l0 level1 lfo1'><font size=2
     color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial'>linuxbios
     for init RAM, and Cache_as_RAM. Code is Flash, and stack is in CACHE. From
     cache_as_ram_main()<o:p></o:p></span></font></li>
 <li class=MsoNormal style='color:navy;mso-list:l0 level1 lfo1'><font size=2
     color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial'>linuxbios_ram:
     for PCI device handling. ---  from hardwaremain()  Code is in ram and unzipped
     from rom by 1.<o:p></o:p></span></font></li>
 <li class=MsoNormal style='color:navy;mso-list:l0 level1 lfo1'><font size=2
     color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial'>payload:
     it could be Etherboot ( boot from Network) or Kernel. Elfloader in 2 will
     load payload and jmp to it.<o:p></o:p></span></font></li>
</ol>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Also the flash will contain three
linuxbios.rom<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Normal+Fallback+Failover.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Failover will be used to init 64K above
rom access.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>YH<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>

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face="Times New Roman"><span style='font-size:12.0pt'>

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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
linuxbios-bounces@linuxbios.org [mailto:linuxbios-bounces@linuxbios.org] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Feng, Libo<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, February 01, 2007
8:16 PM<br>
<b><span style='font-weight:bold'>To:</span></b> linuxbios@linuxbios.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [LinuxBIOS] The two load
RAM codes.</span></font><o:p></o:p></p>

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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>

<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>

<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>I
am studying the LinuxBios project. I have a question about the RAM code: from
Makefile, it seems that LinuxBios could load codes from FLASH to RAM twice,
first for linuxbios_ram, second for so-called payload. My understanding is
correct or not. However, also from Makefile, it seems that linuxbios is
dependent on LINUXBIOS_RAM_ROM, but doesn't include it. The below is abstracted
from a Makefile</span></font><font size=2 face=Arial><span style='font-size:
10.0pt;font-family:Arial'> for via epia-m based on LinuxBiosV2-2534</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>:</span></font><o:p></o:p></p>

<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>linuxbios:
crt0.o $(INIT-OBJECTS) $(LINUXBIOS_APC) $(LINUXBIOS_RAM_ROM) ldscript.ld</span></font><font
face=SimSun><span style='font-family:SimSun'><br>
</span></font><font face=Arial><span style='font-family:Arial'>       </span></font>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>$(CC)
-nostdlib -nostartfiles -static -o $@ -T ldscript.ld crt0.o $(INIT-OBJECTS)</span></font><font
face=SimSun><span style='font-family:SimSun'><br>
</span></font><font face=Arial><span style='font-family:Arial'>       </span></font>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>$(CROSS_COMPILE)nm
-n linuxbios | sort > linuxbios.map.</span></font><font face=SimSun><span
style='font-family:SimSun'> </span></font><br>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>So,
there is no action on LINUXBIOS_RAM_ROM. Does it mean linuxbios_ram is not very
important. Even without it, the system is also ok?</span></font><o:p></o:p></p>

<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Feng
Libo</span></font><font face=SimSun><span style='font-family:SimSun'> </span></font><o:p></o:p></p>

<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>

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