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</o:shapelayout></xml><![endif]--></head><body lang=KO link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=SP11180388 style='margin-top:10.0pt'><span lang=EN-US style='color:black'>Hello,<o:p></o:p></span></p><p class=SP11180388 style='margin-top:10.0pt'><span lang=EN-US style='color:black'>The APCI spec says <o:p></o:p></span></p><p class=MsoNormal><span class=SC11114750><span lang=EN-US style='font-size:11.0pt'>“During OS initialization, OSPM must obtain the Root System Description Pointer (RSDP) structure from the platform. When OSPM locates the Root System Description Pointer (RSDP) structure, it then locates the Root System Description Table (RSDT) or the Extended Root System Description Table (XSDT) using the physical system address supplied in the RSDP.”<o:p></o:p></span></span></p><p class=MsoNormal><span lang=EN-US>How does the bootloader pass the RSDP to the kernel? What is the most typical method and other options? I remember reading somewhere when it’s using UEFI, the value is passed through UEFI system table or like that.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I would appreciate if it’s just a simple explanation. (though I’m more interested in UEFI case)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Thank you.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Chan Kim<o:p></o:p></span></p></div></body></html>