Date: Tue, 24 May 2022 12:29:05 +0000 From: Souradeep Chakrabarti <schakrabarti@microsoft.com> To: "freebsd-arm@FreeBSD.org" <freebsd-arm@FreeBSD.org>, "freebsd-hackers@FreeBSD.org" <freebsd-hackers@FreeBSD.org> Cc: Wei Hu <weh@microsoft.com> Subject: RE: unable to get virtual serial console for EFI Message-ID: <PSAP153MB0536ABA1A82461F1474A3389CCD79@PSAP153MB0536.APCP153.PROD.OUTLOOK.COM> In-Reply-To: <PSAP153MB0536353A03BF26D0F384842DCCD79@PSAP153MB0536.APCP153.PROD.OUTLOOK.COM> References: <PSAP153MB0536FC1FA3DA80BC228AEC6ECCD49@PSAP153MB0536.APCP153.PROD.OUTLOOK.COM> <PSAP153MB0536353A03BF26D0F384842DCCD79@PSAP153MB0536.APCP153.PROD.OUTLOOK.COM>
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[-- Attachment #1 --] Hi, I am trying to get the virtual serial console to access via putty while booting FreeBSD 13 arm64 bootonly on Hyper-V. Setting console="efi" is not helping to have the virtual serial console access using putty for ARM64. It is before any kernel module loaded. I can get the loader output in vmconnect.exe but not in the putty. Though I can see VM is getting connected to Hyper-V virtual COM1 console. But no output is coming to putty. I have following question : Any specific support from EFI firmware, is required for virtual serial to work in EFI loader in this phase of loading? I can see FreeBSD EFI loader is able to read the ConInDev and ConOutDev variables. With set console="efi" or set console="comconsole,efi" or set console="efi" , nothing in getting redirected in putty in arm64. But in X86 that is not the problem. Without this debugging the bring up of FreeBSD on arm64 Hyper-V is quite difficult. Any help or pointers are really appreciated. Regards, Souradeep [-- Attachment #2 --] <html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">; <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <style><!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0cm; font-size:11.0pt; font-family:"Calibri",sans-serif; mso-fareast-language:EN-US;} p.MsoPlainText, li.MsoPlainText, div.MsoPlainText {mso-style-priority:99; mso-style-link:"Plain Text Char"; margin:0cm; font-size:11.0pt; font-family:"Calibri",sans-serif; mso-fareast-language:EN-US;} span.PlainTextChar {mso-style-name:"Plain Text Char"; mso-style-priority:99; mso-style-link:"Plain Text"; font-family:"Calibri",sans-serif;} .MsoChpDefault {mso-style-type:export-only; font-size:10.0pt;} @page WordSection1 {size:612.0pt 792.0pt; margin:72.0pt 72.0pt 72.0pt 72.0pt;} div.WordSection1 {page:WordSection1;} --></style><!--[if gte mso 9]><xml> <o:shapedefaults v:ext="edit" spidmax="1026" /> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext="edit"> <o:idmap v:ext="edit" data="1" /> </o:shapelayout></xml><![endif]--> </head> <body lang="EN-IN" link="#0563C1" vlink="#954F72" style="word-wrap:break-word"> <div class="WordSection1"> <p class="MsoNormal">Hi,<o:p></o:p></p> <p class="MsoNormal"><o:p> </o:p></p> <p class="MsoNormal">I am trying to get the virtual serial console to access via putty while booting FreeBSD 13 arm64 bootonly on Hyper-V.<o:p></o:p></p> <p class="MsoNormal"><o:p> </o:p></p> <p class="MsoPlainText">Setting console="efi" is not helping to have the virtual serial console access using putty for ARM64. It is before any kernel module loaded. <o:p></o:p></p> <p class="MsoPlainText">I can get the loader output in vmconnect.exe but not in the putty. <o:p></o:p></p> <p class="MsoPlainText"><o:p> </o:p></p> <p class="MsoPlainText">Though I can see VM is getting connected to Hyper-V virtual COM1 console. But no output is coming to putty.<o:p></o:p></p> <p class="MsoPlainText"><o:p> </o:p></p> <p class="MsoPlainText">I have following question :<o:p></o:p></p> <p class="MsoPlainText">Any specific support from EFI firmware, is required for virtual serial to work in EFI loader in this phase of loading?<o:p></o:p></p> <p class="MsoPlainText"><o:p> </o:p></p> <p class="MsoPlainText">I can see FreeBSD EFI loader is able to read the ConInDev and ConOutDev variables.<o:p></o:p></p> <p class="MsoPlainText"><o:p> </o:p></p> <p class="MsoPlainText">With set console="efi" or set console="comconsole,efi" or set console="efi" , nothing in getting redirected in putty in arm64.<o:p></o:p></p> <p class="MsoPlainText">But in X86 that is not the problem.<o:p></o:p></p> <p class="MsoPlainText"><o:p> </o:p></p> <p class="MsoPlainText">Without this debugging the bring up of FreeBSD on arm64 Hyper-V is quite difficult. Any help or pointers are really appreciated.<o:p></o:p></p> <p class="MsoPlainText"><o:p> </o:p></p> <p class="MsoPlainText">Regards,<o:p></o:p></p> <p class="MsoPlainText">Souradeep<o:p></o:p></p> <p class="MsoNormal"><o:p> </o:p></p> <p class="MsoNormal"><o:p> </o:p></p> </div> </body> </html>
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