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ZealOS/docs/System/Boot/BootDVD.CC.html
TomAwezome 1b75d91002 Fix Mount AHCI Port selection. 
Add arg to SATARep to specify drive types to show.
Add checks in AHCIPortInit to verify port signatures, add helper method to get signatures from port.
2021-08-02 16:40:05 -04:00

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<a name="l1"></a><span class=cF0>#</span><span class=cF1>define</span><span class=cF0> </span><span class=cF3>BOOT_HIGH_LOC_DVD</span><span class=cF0> (</span><span class=cF7>(</span><span class=cF3>BOOT_RAM_LIMIT</span><span class=cF0> - (</span><span class=cF3>BOOT_STACK_SIZE</span><span class=cF0> + </span><span class=cF3>DVD_BOOT_LOADER_SIZE</span><span class=cF0>)</span><span class=cF7>)</span><span class=cF0> &gt;&gt; </span><span class=cFE>4</span><span class=cF0>)
<a name="l2"></a>
<a name="l3"></a></span><span class=cF5>DefinePrint</span><span class=cF0>(</span><span class=cF6>&quot;DD_BOOT_HIGH_LOC_DVD&quot;</span><span class=cF0>, </span><span class=cF6>&quot;%08X&quot;</span><span class=cF0>, </span><span class=cF3>BOOT_HIGH_LOC_DVD</span><span class=cF0> &lt;&lt; </span><span class=cFE>4</span><span class=cF0>);
<a name="l4"></a></span><span class=cF5>DefinePrint</span><span class=cF0>(</span><span class=cF6>&quot;DD_BOOT_HIGH_LOC_DVD_END&quot;</span><span class=cF0>, </span><span class=cF6>&quot;%08X&quot;</span><span class=cF0>, </span><span class=cF3>BOOT_RAM_LIMIT</span><span class=cF0> - </span><span class=cFE>1</span><span class=cF0>);
<a name="l5"></a>
<a name="l6"></a></span><span class=cF1>asm</span><span class=cF0> {
<a name="l7"></a></span><span class=cF1>USE16</span><span class=cF0>
<a name="l8"></a></span><span class=cFD>BDVD_START</span><span class=cF0>::
<a name="l9"></a></span><span class=cF2>//DL is supposed to have the BIOS drive number</span><span class=cF0>
<a name="l10"></a> </span><span class=cF1>CLD</span><span class=cF0>
<a name="l11"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cF3>BOOT_HIGH_LOC_DVD</span><span class=cF0>
<a name="l12"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>ES</span><span class=cF0>, </span><span class=cFC>AX</span><span class=cF0>
<a name="l13"></a>
<a name="l14"></a> </span><span class=cF1>CLI</span><span class=cF0>
<a name="l15"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>SS</span><span class=cF0>, </span><span class=cFC>AX</span><span class=cF0>
<a name="l16"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>SP</span><span class=cF0>, </span><span class=cF3>BOOT_STACK_SIZE</span><span class=cF0> + </span><span class=cF3>DVD_BOOT_LOADER_SIZE</span><span class=cF0>
<a name="l17"></a> </span><span class=cF1>STI</span><span class=cF0>
<a name="l18"></a>
<a name="l19"></a> </span><span class=cF1>CALL</span><span class=cF0> BDVD_GET_RIP
<a name="l20"></a>BDVD_GET_RIP:
<a name="l21"></a> </span><span class=cF1>POP</span><span class=cF0> </span><span class=cFC>BX</span><span class=cF0>
<a name="l22"></a> </span><span class=cF1>SUB</span><span class=cF0> </span><span class=cFC>BX</span><span class=cF0>, BDVD_GET_RIP - </span><span class=cFD>BDVD_START</span><span class=cF0>
<a name="l23"></a> </span><span class=cF1>SHR</span><span class=cF0> </span><span class=cFC>BX</span><span class=cF0>, </span><span class=cFE>4</span><span class=cF0>
<a name="l24"></a></span><span class=cF2>//This copies this bootloader's code to 0x00096600</span><span class=cF0>
<a name="l25"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cFC>CS</span><span class=cF0>
<a name="l26"></a> </span><span class=cF1>ADD</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cFC>BX</span><span class=cF0>
<a name="l27"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>DS</span><span class=cF0>, </span><span class=cFC>AX</span><span class=cF0>
<a name="l28"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>CX</span><span class=cF0>, </span><span class=cF3>DVD_BOOT_LOADER_SIZE</span><span class=cF0>
<a name="l29"></a> </span><span class=cF1>XOR</span><span class=cF0> </span><span class=cFC>SI</span><span class=cF0>, </span><span class=cFC>SI</span><span class=cF0>
<a name="l30"></a> </span><span class=cF1>XOR</span><span class=cF0> </span><span class=cFC>DI</span><span class=cF0>, </span><span class=cFC>DI</span><span class=cF0>
<a name="l31"></a> </span><span class=cF1>REP_MOVSB</span><span class=cF0>
<a name="l32"></a>
<a name="l33"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cF3>BOOT_HIGH_LOC_DVD</span><span class=cF0>
<a name="l34"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>DS</span><span class=cF0>, </span><span class=cFC>AX</span><span class=cF0>
<a name="l35"></a>
<a name="l36"></a></span><span class=cF2>//The assembler doesn't support 16-bit very well.</span><span class=cF0>
<a name="l37"></a> </span><span class=cF1>DU8</span><span class=cF0> </span><span class=cFE>0xEA</span><span class=cF0>; </span><span class=cF2>//JMP BOOT_HIGH_LOC_DVD:BDVD_MAIN</span><span class=cF0>
<a name="l38"></a> </span><span class=cF1>DU16</span><span class=cF0> </span><span class=cFD>BDVD_MAIN</span><span class=cF0> - </span><span class=cFD>BDVD_START</span><span class=cF0>, </span><span class=cF3>BOOT_HIGH_LOC_DVD</span><span class=cF0>;
<a name="l39"></a>
<a name="l40"></a>BDVD_BIOS_DRIVE_NUM: </span><span class=cF1>DU8</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>;
<a name="l41"></a>BDVD_PAGE: </span><span class=cF1>DU8</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>;
<a name="l42"></a>
<a name="l43"></a>BDVD_DAP: </span><span class=cF1>DU8</span><span class=cF0> </span><span class=cFE>16</span><span class=cF0>, </span><span class=cFE>0</span><span class=cF0>, </span><span class=cFE>1</span><span class=cF0>, </span><span class=cFE>0</span><span class=cF0>; </span><span class=cF2>//One blk at a time</span><span class=cF0>
<a name="l44"></a>BDVD_DAP_BUF: </span><span class=cF1>DU16</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>, </span><span class=cFE>0</span><span class=cF0>;
<a name="l45"></a>BDVD_DAP_BLK: </span><span class=cF1>DU64</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>;
<a name="l46"></a>
<a name="l47"></a>BDVD_ZEALOS_MESSAGE: </span><span class=cF1>DU8</span><span class=cF0> </span><span class=cF6>&quot;Loading ZealOS&quot;</span><span class=cF0>, </span><span class=cFE>0</span><span class=cF0>;
<a name="l48"></a>
<a name="l49"></a>BDVD_NOT64_MESSAGE: </span><span class=cF1>DU8</span><span class=cF0> </span><span class=cF6>&quot;ZealOS requires a 64-bit capable processor.\n\r&quot;</span><span class=cF0>, </span><span class=cFE>0</span><span class=cF0>;
<a name="l50"></a>
<a name="l51"></a></span><span class=cF2>//These get patched.</span><span class=cF0>
<a name="l52"></a></span><span class=cFD>BDVD_BLK_LO</span><span class=cF0>:: </span><span class=cF1>DU16</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>;
<a name="l53"></a></span><span class=cFD>BDVD_BLK_HI</span><span class=cF0>:: </span><span class=cF1>DU16</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>;
<a name="l54"></a></span><span class=cFD>BDVD_BLK_COUNT</span><span class=cF0>:: </span><span class=cF1>DU16</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>;
<a name="l55"></a></span><span class=cFD>BDVD_SHIFT_BLKS</span><span class=cF0>:: </span><span class=cF1>DU16</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>;
<a name="l56"></a></span><span class=cFD>BDVD_PROGRESS_STEP</span><span class=cF0>:: </span><span class=cF1>DU32</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>;
<a name="l57"></a></span><span class=cFD>BDVD_PROGRESS_VAL</span><span class=cF0>:: </span><span class=cF1>DU32</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>;
<a name="l58"></a>
<a name="l59"></a></span><span class=cFD>BDVD_PUT_CHAR</span><span class=cF0>::
<a name="l60"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AH</span><span class=cF0>, </span><span class=cFE>0xE</span><span class=cF0>
<a name="l61"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>BL</span><span class=cF0>, </span><span class=cFE>7</span><span class=cF0> </span><span class=cF2>//Might be foreground color on some BIOS's</span><span class=cF0>
<a name="l62"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>BH</span><span class=cF0>, </span><span class=cF1>U8</span><span class=cF0> [BDVD_PAGE - </span><span class=cFD>BDVD_START</span><span class=cF0>]
<a name="l63"></a> </span><span class=cF1>INT</span><span class=cF0> </span><span class=cFE>0x10</span><span class=cF0>
<a name="l64"></a></span><span class=cFD>BDVD_RET</span><span class=cF0>::
<a name="l65"></a> </span><span class=cF1>RET</span><span class=cF0>
<a name="l66"></a></span><span class=cFD>BDVD_PUTS</span><span class=cF0>::
<a name="l67"></a>@@1: </span><span class=cF1>LODSB</span><span class=cF0>
<a name="l68"></a> </span><span class=cF1>TEST</span><span class=cF0> </span><span class=cFC>AL</span><span class=cF0>, </span><span class=cFC>AL</span><span class=cF0>
<a name="l69"></a> </span><span class=cF1>JZ</span><span class=cF0> </span><span class=cFD>BDVD_RET</span><span class=cF0>
<a name="l70"></a> </span><span class=cF1>CALL</span><span class=cF0> </span><span class=cFD>BDVD_PUT_CHAR</span><span class=cF0>
<a name="l71"></a> </span><span class=cF1>JMP</span><span class=cF0> @@1
<a name="l72"></a>
<a name="l73"></a></span><span class=cFD>BDVD_MAIN</span><span class=cF0>::
<a name="l74"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cF1>U8</span><span class=cF0> [BDVD_BIOS_DRIVE_NUM - </span><span class=cFD>BDVD_START</span><span class=cF0>], </span><span class=cFC>DL</span><span class=cF0> </span><span class=cF2>//Passed in by BIOS</span><span class=cF0>
<a name="l75"></a>
<a name="l76"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AH</span><span class=cF0>, </span><span class=cFE>0xF</span><span class=cF0>
<a name="l77"></a> </span><span class=cF1>INT</span><span class=cF0> </span><span class=cFE>0x10</span><span class=cF0>
<a name="l78"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cF1>U8</span><span class=cF0> [BDVD_PAGE - </span><span class=cFD>BDVD_START</span><span class=cF0>], </span><span class=cFC>BH</span><span class=cF0> </span><span class=cF2>//Video page</span><span class=cF0>
<a name="l79"></a>
<a name="l80"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>EAX</span><span class=cF0>, </span><span class=cFE>0x80000000</span><span class=cF0>
<a name="l81"></a> </span><span class=cF1>CPUID</span><span class=cF0>
<a name="l82"></a> </span><span class=cF1>CMP</span><span class=cF0> </span><span class=cFC>EAX</span><span class=cF0>, </span><span class=cFE>0x80000001</span><span class=cF0>
<a name="l83"></a> </span><span class=cF1>JB</span><span class=cF0> @@05
<a name="l84"></a>
<a name="l85"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>EAX</span><span class=cF0>, </span><span class=cFE>0x80000001</span><span class=cF0>
<a name="l86"></a> </span><span class=cF1>CPUID</span><span class=cF0>
<a name="l87"></a> </span><span class=cF1>BT</span><span class=cF0> </span><span class=cFC>EDX</span><span class=cF0>, </span><span class=cFE>29</span><span class=cF0>
<a name="l88"></a> </span><span class=cF1>JC</span><span class=cF0> @@15
<a name="l89"></a>@@05: </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>SI</span><span class=cF0>, BDVD_NOT64_MESSAGE - </span><span class=cFD>BDVD_START</span><span class=cF0>
<a name="l90"></a> </span><span class=cF1>CALL</span><span class=cF0> </span><span class=cFD>BDVD_PUTS</span><span class=cF0>
<a name="l91"></a>@@10: </span><span class=cF1>JMP</span><span class=cF0> @@10
<a name="l92"></a>
<a name="l93"></a>@@15: </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>SI</span><span class=cF0>, BDVD_ZEALOS_MESSAGE - </span><span class=cFD>BDVD_START</span><span class=cF0>
<a name="l94"></a> </span><span class=cF1>CALL</span><span class=cF0> </span><span class=cFD>BDVD_PUTS</span><span class=cF0>
<a name="l95"></a>
<a name="l96"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cF3>BOOT_RAM_BASE</span><span class=cF0> / </span><span class=cFE>16</span><span class=cF0>
<a name="l97"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>ES</span><span class=cF0>, </span><span class=cFC>AX</span><span class=cF0>
<a name="l98"></a> </span><span class=cF1>XOR</span><span class=cF0> </span><span class=cFC>ECX</span><span class=cF0>, </span><span class=cFC>ECX</span><span class=cF0>
<a name="l99"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>CX</span><span class=cF0>, </span><span class=cF9>U16</span><span class=cF0> [</span><span class=cFD>BDVD_BLK_COUNT</span><span class=cF0> - </span><span class=cFD>BDVD_START</span><span class=cF0>]
<a name="l100"></a>
<a name="l101"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>EAX</span><span class=cF0>, (</span><span class=cFE>80</span><span class=cF0> - </span><span class=cFE>7</span><span class=cF0> - </span><span class=cFE>9</span><span class=cF0>) * </span><span class=cFE>65536</span><span class=cF0> </span><span class=cF2>//80 columns</span><span class=cF0>
<a name="l102"></a> </span><span class=cF1>XOR</span><span class=cF0> </span><span class=cFC>EDX</span><span class=cF0>, </span><span class=cFC>EDX</span><span class=cF0>
<a name="l103"></a> </span><span class=cF1>DIV</span><span class=cF0> </span><span class=cFC>ECX</span><span class=cF0>
<a name="l104"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cF9>U32</span><span class=cF0> [</span><span class=cFD>BDVD_PROGRESS_STEP</span><span class=cF0> - </span><span class=cFD>BDVD_START</span><span class=cF0>], </span><span class=cFC>EAX</span><span class=cF0>
<a name="l105"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cF9>U32</span><span class=cF0> [</span><span class=cFD>BDVD_PROGRESS_VAL</span><span class=cF0> - </span><span class=cFD>BDVD_START</span><span class=cF0>], </span><span class=cFE>0</span><span class=cF0>
<a name="l106"></a>
<a name="l107"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cF9>U16</span><span class=cF0> [</span><span class=cFD>BDVD_BLK_LO</span><span class=cF0> - </span><span class=cFD>BDVD_START</span><span class=cF0>]
<a name="l108"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>DX</span><span class=cF0>, </span><span class=cF9>U16</span><span class=cF0> [</span><span class=cFD>BDVD_BLK_HI</span><span class=cF0> - </span><span class=cFD>BDVD_START</span><span class=cF0>]
<a name="l109"></a>
<a name="l110"></a>@@20: </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cFC>CX</span><span class=cF0> </span><span class=cF2>//Blk count</span><span class=cF0>
<a name="l111"></a>
<a name="l112"></a></span><span class=cF2>//READ BLK</span><span class=cF0>
<a name="l113"></a> </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0> </span><span class=cF2>//Blk lo</span><span class=cF0>
<a name="l114"></a> </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cFC>DX</span><span class=cF0> </span><span class=cF2>//Blk hi</span><span class=cF0>
<a name="l115"></a> </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cFC>ES</span><span class=cF0> </span><span class=cF2>//Buf seg</span><span class=cF0>
<a name="l116"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cF9>U16</span><span class=cF0> [BDVD_DAP_BLK - </span><span class=cFD>BDVD_START</span><span class=cF0>], </span><span class=cFC>AX</span><span class=cF0>
<a name="l117"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cF9>U16</span><span class=cF0> [BDVD_DAP_BLK + </span><span class=cFE>2</span><span class=cF0> - </span><span class=cFD>BDVD_START</span><span class=cF0>], </span><span class=cFC>DX</span><span class=cF0>
<a name="l118"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cFC>ES</span><span class=cF0>
<a name="l119"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cF9>U16</span><span class=cF0> [BDVD_DAP_BUF + </span><span class=cFE>2</span><span class=cF0> - </span><span class=cFD>BDVD_START</span><span class=cF0>], </span><span class=cFC>AX</span><span class=cF0> </span><span class=cF2>//ES:0000</span><span class=cF0>
<a name="l120"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>SI</span><span class=cF0>, BDVD_DAP - </span><span class=cFD>BDVD_START</span><span class=cF0> </span><span class=cF2>//DS:SI=DAP</span><span class=cF0>
<a name="l121"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AH</span><span class=cF0>, </span><span class=cFE>0x42</span><span class=cF0>
<a name="l122"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>DL</span><span class=cF0>, </span><span class=cF1>U8</span><span class=cF0> [BDVD_BIOS_DRIVE_NUM - </span><span class=cFD>BDVD_START</span><span class=cF0>]
<a name="l123"></a> </span><span class=cF1>INT</span><span class=cF0> </span><span class=cFE>0x13</span><span class=cF0>
<a name="l124"></a>
<a name="l125"></a> </span><span class=cF1>POP</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0> </span><span class=cF2>//ES</span><span class=cF0>
<a name="l126"></a> </span><span class=cF1>ADD</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cF3>DVD_BLK_SIZE</span><span class=cF0> / </span><span class=cFE>16</span><span class=cF0>
<a name="l127"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>ES</span><span class=cF0>, </span><span class=cFC>AX</span><span class=cF0>
<a name="l128"></a> </span><span class=cF1>POP</span><span class=cF0> </span><span class=cFC>DX</span><span class=cF0>
<a name="l129"></a> </span><span class=cF1>POP</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>
<a name="l130"></a> </span><span class=cF1>INC</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>
<a name="l131"></a> </span><span class=cF1>JNZ</span><span class=cF0> @@25
<a name="l132"></a> </span><span class=cF1>INC</span><span class=cF0> </span><span class=cFC>DX</span><span class=cF0>
<a name="l133"></a>
<a name="l134"></a>@@25: </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>
<a name="l135"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>BX</span><span class=cF0>, </span><span class=cF9>U16</span><span class=cF0> [</span><span class=cFD>BDVD_PROGRESS_VAL</span><span class=cF0> + </span><span class=cFE>2</span><span class=cF0> - </span><span class=cFD>BDVD_START</span><span class=cF0>]
<a name="l136"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>EAX</span><span class=cF0>, </span><span class=cF9>U32</span><span class=cF0> [</span><span class=cFD>BDVD_PROGRESS_STEP</span><span class=cF0> - </span><span class=cFD>BDVD_START</span><span class=cF0>]
<a name="l137"></a> </span><span class=cF1>ADD</span><span class=cF0> </span><span class=cF9>U32</span><span class=cF0> [</span><span class=cFD>BDVD_PROGRESS_VAL</span><span class=cF0> - </span><span class=cFD>BDVD_START</span><span class=cF0>], </span><span class=cFC>EAX</span><span class=cF0>
<a name="l138"></a> </span><span class=cF1>CMP</span><span class=cF0> </span><span class=cF9>U16</span><span class=cF0> [</span><span class=cFD>BDVD_PROGRESS_VAL</span><span class=cF0> + </span><span class=cFE>2</span><span class=cF0> - </span><span class=cFD>BDVD_START</span><span class=cF0>], </span><span class=cFC>BX</span><span class=cF0>
<a name="l139"></a> </span><span class=cF1>JE</span><span class=cF0> @@30
<a name="l140"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AL</span><span class=cF0>, </span><span class=cF6>'.'</span><span class=cF0>
<a name="l141"></a> </span><span class=cF1>CALL</span><span class=cF0> </span><span class=cFD>BDVD_PUT_CHAR</span><span class=cF0>
<a name="l142"></a>@@30: </span><span class=cF1>POP</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>
<a name="l143"></a>
<a name="l144"></a> </span><span class=cF1>POP</span><span class=cF0> </span><span class=cFC>CX</span><span class=cF0>
<a name="l145"></a> </span><span class=cF1>LOOP</span><span class=cF0> @@20
<a name="l146"></a>
<a name="l147"></a></span><span class=cF2>//Shift backward to align</span><span class=cF0>
<a name="l148"></a> </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cFC>DS</span><span class=cF0>
<a name="l149"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>BX</span><span class=cF0>, </span><span class=cF9>U16</span><span class=cF0> [</span><span class=cFD>BDVD_SHIFT_BLKS</span><span class=cF0> - </span><span class=cFD>BDVD_START</span><span class=cF0>]
<a name="l150"></a> </span><span class=cF1>SHL</span><span class=cF0> </span><span class=cFC>BX</span><span class=cF0>, </span><span class=cF3>BLK_SIZE_BITS</span><span class=cF0> - </span><span class=cFE>4</span><span class=cF0>
<a name="l151"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>CX</span><span class=cF0>, </span><span class=cF9>U16</span><span class=cF0> [</span><span class=cFD>BDVD_BLK_COUNT</span><span class=cF0> - </span><span class=cFD>BDVD_START</span><span class=cF0>]
<a name="l152"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cF3>BOOT_RAM_BASE</span><span class=cF0> / </span><span class=cFE>16</span><span class=cF0>
<a name="l153"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>ES</span><span class=cF0>, </span><span class=cFC>AX</span><span class=cF0>
<a name="l154"></a> </span><span class=cF1>ADD</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cFC>BX</span><span class=cF0>
<a name="l155"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>DS</span><span class=cF0>, </span><span class=cFC>AX</span><span class=cF0>
<a name="l156"></a>@@35: </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cFC>CX</span><span class=cF0>
<a name="l157"></a> </span><span class=cF1>XOR</span><span class=cF0> </span><span class=cFC>SI</span><span class=cF0>, </span><span class=cFC>SI</span><span class=cF0>
<a name="l158"></a> </span><span class=cF1>XOR</span><span class=cF0> </span><span class=cFC>DI</span><span class=cF0>, </span><span class=cFC>DI</span><span class=cF0>
<a name="l159"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>CX</span><span class=cF0>, </span><span class=cF3>DVD_BLK_SIZE</span><span class=cF0> / </span><span class=cFE>4</span><span class=cF0>
<a name="l160"></a> </span><span class=cF1>REP_MOVSD</span><span class=cF0>
<a name="l161"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cFC>DS</span><span class=cF0>
<a name="l162"></a> </span><span class=cF1>ADD</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cF3>DVD_BLK_SIZE</span><span class=cF0> / </span><span class=cFE>16</span><span class=cF0>
<a name="l163"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>DS</span><span class=cF0>, </span><span class=cFC>AX</span><span class=cF0>
<a name="l164"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cFC>ES</span><span class=cF0>
<a name="l165"></a> </span><span class=cF1>ADD</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cF3>DVD_BLK_SIZE</span><span class=cF0> / </span><span class=cFE>16</span><span class=cF0>
<a name="l166"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>ES</span><span class=cF0>, </span><span class=cFC>AX</span><span class=cF0>
<a name="l167"></a> </span><span class=cF1>POP</span><span class=cF0> </span><span class=cFC>CX</span><span class=cF0>
<a name="l168"></a> </span><span class=cF1>LOOP</span><span class=cF0> @@35
<a name="l169"></a> </span><span class=cF1>POP</span><span class=cF0> </span><span class=cFC>DS</span><span class=cF0>
<a name="l170"></a>
<a name="l171"></a></span><span class=cF2>//See </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/BlkDev/DiskAHCI.CC.html#l1145"><span class=cF4>AHCIBootDVDProbeAll</span></a><span class=cF2>().</span><span class=cF0>
<a name="l172"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>EBX</span><span class=cF0>, </span><span class=cF9>U32</span><span class=cF0> [</span><span class=cFD>BDVD_BLK_LO</span><span class=cF0> - </span><span class=cFD>BDVD_START</span><span class=cF0>]
<a name="l173"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cF9>U16</span><span class=cF0> [</span><span class=cFD>BDVD_SHIFT_BLKS</span><span class=cF0> - </span><span class=cFD>BDVD_START</span><span class=cF0>]
<a name="l174"></a> </span><span class=cF1>SHL</span><span class=cF0> </span><span class=cFC>EAX</span><span class=cF0>, </span><span class=cFE>16</span><span class=cF0>
<a name="l175"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cF3>BOOT_SRC_DVD</span><span class=cF0> </span><span class=cF2>//</span><span class=cF9><u>See sys_boot_src</span><span class=cF0>
<a name="l176"></a>
<a name="l177"></a></u></span><span class=cF2>//The assembler doesn't support 16-bit very well.</span><span class=cF0>
<a name="l178"></a> </span><span class=cF1>DU8</span><span class=cF0> </span><span class=cFE>0xEA</span><span class=cF0>; </span><span class=cF2>//JMP BOOT_RAM_BASE:0000</span><span class=cF0>
<a name="l179"></a> </span><span class=cF1>DU16</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>, </span><span class=cF3>BOOT_RAM_BASE</span><span class=cF0> / </span><span class=cFE>16</span><span class=cF0>;
<a name="l180"></a></span><span class=cF2>//Continues here </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/KStart16.CC.html#l1"><span class=cF4>::/Kernel/KStart16.CC</span></a><span class=cF0>
<a name="l181"></a></span><span class=cFD>BDVD_END</span><span class=cF0>::
<a name="l182"></a>#</span><span class=cF1>assert</span><span class=cF0> </span><span class=cFD>BDVD_END</span><span class=cF0>-</span><span class=cFD>BDVD_START</span><span class=cF0> &lt; </span><span class=cF3>DVD_BOOT_LOADER_SIZE</span><span class=cF0>
<a name="l183"></a>}
</span></pre></body>
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