| 44,7 → 44,7 |
|---|
| end if |
| |
| mov dx, 0xcf8 ; CF8h = Vortex86 PCI Configuration Address port |
| mov eax, 0x80000090 ; 0x80000090 = Starting PCI address to read from (32-bit register - accessed as DWORD) |
| mov eax, OS_BASE+0x90 ; 0x80000090 = Starting PCI address to read from (32-bit register - accessed as DWORD) |
| out dx, eax ; Send request to PCI address port to retrieve data from this address |
| mov dx, 0xcfc ; CFCh = Vortex86 PCI Configuration Data port |
| in eax, dx ; Read data (SoC type) from PCI data port |
| 54,23 → 54,24 |
|---|
| end if |
| |
| DEBUGF 1, "K : Vortex86 SoC register returned 0x" |
| test eax, eax ; We need to break out in case the result is '\0' since otherwise we will fail at NULL string |
| jz .nullPCIoutput |
| mov [Vortex86CPUcode], eax |
| DEBUGF 1, "%x (%s): ", eax, Vortex86CPUcode |
| cmp ax, 4d44h ; Check whether it's Vortex86 family (all Vortex86 SoC have ID in form of "0xNN504d44") |
| jnz .notVortex86 |
| shr eax, 16 ; Discard lower word in EAX which is always 4d44h in Vortex86 family |
| cmp al, 50h ; The 3rd byte is always 50h in Vortex86 SoC (if this is the case, we need just the highest byte) |
| jnz .notVortex86 |
| mov bl, ah ; Copy SoC type to BL since EAX (that includes AH) is used implicitly in "LODSD" command below |
| test eax, eax ; Check whether the port output was '\0' |
| jz .nullPCIoutput ; In case the result is '\0' (NULL), skip further testing and exit |
| mov [Vortex86CPUcode], eax ; Save HEX CPU code to Vortex86CPUcode (so it can be used later) |
| DEBUGF 1, "%x (%s): ", eax, Vortex86CPUcode ; Print the CPU code (as HEX and as string) to debug log |
| |
| mov ebx, 0x444d5000 ; Apply Vortex86 CPU code mask (all Vortex86 SoC have ID in form of "0xNN504d44") |
| bswap eax ; Assumed it is Vortex86 SoC, the highest byte identifies the exact CPU, so move it to the lowest byte |
| mov bl, al ; Copy SoC type to BL since EAX (that includes AL) is used implicitly in "LODSD" command below |
| cmp eax, ebx ; Now see whether the 3 higher bytes were "0x504d44" (which means it's Vortex86) |
| jnz .notVortex86 ; Sorry, it's not Vortex86 - go say so and exit |
| |
| mov esi, Vortex86SoClist ; ESI points to the start of Vortex86SoClist (used implicitly in "LODSD" command below) |
| xor ecx, ecx ; Zero ECX (it is used as counter) |
| cld ; Clears the DF flag in the EFLAGS register (DF=0 --> String operations increment ESI) |
| @@: |
| inc ecx ; Increment our counter |
| cmp ecx, Vortex86SoCnum ; Check if we iterated Vortex86SoCnum times already (i.e. went over the entire Vortex86SoClist) |
| ja .unknownVortex86 ; If the entire list was tested and our CPU is not in that list, it is unknown Vortex86 SoC |
| inc ecx ; Increment our counter |
| lodsd ; Load DWORD at address DS:ESI into EAX (puts 1 line from Vortex86SoClist into EAX, then increments ESI) |
| cmp bl, al ; Check if our CPU matches the current record in the list |
| jne @b ; No match --> repeat with next record |
| 78,12 → 79,11 |
|---|
| shr eax, 8 ; Match found --> drop the SoC type code from Vortex86SoClist name and replace it with \0 |
| mov dword [Vortex86SoCname+8], eax ; Concatenate it with prefix to receive complete SoC name (\0 is string termination) |
| mov [Vortex86CPUid], cl ; Save the CPUid (1=Vortex86SX, 2=Vortex86DX, ..., Vortex86SoCnum+1=Unknown Vortex86) |
| DEBUGF 1, "%s (id=%d)\n", Vortex86SoCname, [Vortex86CPUid]:1 ; Say what we have found (CPU name and id) |
| jmp .Vortex86end |
| |
| DEBUGF 1, "%s (id=%d)\n", Vortex86SoCname, [Vortex86CPUid]:1 |
| jmp .Vortex86end ; Say what we have found (CPU name and id) and exit |
| |
| .nullPCIoutput: ; Emulators and non-Vortex86 CPU computers will usually return \0 in this register |
| DEBUGF 1, "0 (NULL)\n" |
| .notVortex86: ; In case this register is used by other CPUs for other purpose, it's interesting what it contains |
| DEBUGF 1, "not a Vortex86 CPU\n" |
| jmp .Vortex86end |
| |
| .unknownVortex86: |
| 91,7 → 91,7 |
|---|
| DEBUGF 1, "unknown Vortex86 CPU (id=%d, last known is %d)\n", [Vortex86CPUid]:1, Vortex86SoCnum |
| jmp .Vortex86end |
| |
| .notVortex86: ; In case this register is used by other CPUs for other purpose, it's interesting what it contains |
| DEBUGF 1, "not a Vortex86 CPU\n" |
| .nullPCIoutput: ; Emulators and non-Vortex86 CPU computers will usually return \0 in this register |
| DEBUGF 1, "0 (NULL)\n" |
| |
| .Vortex86end: |