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;; ;; |
;; Copyright (C) KolibriOS team 2004-2013. All rights reserved. ;; |
;; Distributed under terms of the GNU General Public License ;; |
;; ;; |
;; 20/11/2013 yogev_ezra: Initial version ;; |
;; Thanks for help to: dunkaist, eAndrew, hidnplayr, Mario ;; |
;; ;; |
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$Revision$ |
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VORTEX86DEBUG = 0 ; For testing in emulators and in non-Vortex86 CPU computers, set this to 1 |
VORTEX86DEBUGVALUE = 0x35504d44 ; FAKE port output = used for testing |
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; Detect Vortex86 CPU and generate CPU name in string format (PCI address at 93H~90H in Vortex86 North Bridge contains SoC type) |
; Available Vortex86 CPU codes taken from Coreboot project. New codes should be added to "Vortex86SoClist" below |
; #define DMP_CPUID_SX 0x31504d44 ("DMP1") |
; #define DMP_CPUID_DX 0x32504d44 ("DMP2") |
; #define DMP_CPUID_MX 0x33504d44 ("DMP3") |
; #define DMP_CPUID_DX2 0x34504d44 ("DMP4") |
; #define DMP_CPUID_MX_PLUS 0x35504d44 ("DMP5") |
; #define DMP_CPUID_EX 0x37504d44 ("DMP7") |
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iglobal |
Vortex86CPUcode dd ? ; Vortex86 CPU code in HEX format (4 bytes), can be shown as string if converted to ASCII characters |
Vortex86CPUid db 0 ; Vortex86 CPU id in integer format (1=Vortex86SX, 2=Vortex86DX, ...) |
Vortex86SoCname db 'Vortex86 ',0 ; This variable will hold the full name of Vortex86 SoC |
Vortex86SoClist: ; List of Vortex86 CPUs known today. Add new record to this list when new CPU becomes available |
db 0x31, 'SX ' ; id=1 |
db 0x32, 'DX ' ; id=2 |
db 0x33, 'MX ' ; id=3 |
db 0x34, 'DX2' ; id=4 |
db 0x35, 'MX+' ; id=5 |
db 0x37, 'EX ' ; id=6 |
Vortex86SoCnum = ($ - Vortex86SoClist) / 4 ; Calculate the total number of known Vortex86 CPUs (if id=Vortex86SoCnum+1 --> unknown SoC) |
endg |
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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) |
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 |
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if VORTEX86DEBUG |
; // Used for debug purposes: testing in emulator and in non-Vortex86 CPU computers |
mov eax, VORTEX86DEBUGVALUE |
end if |
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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 |
jnz .notVortex86 |
shr ax, 8 ; Discard 3rd byte in EAX, the highest byte determines the SoC type |
mov bl, al ; Copy SoC type to BL since EAX (that contains AL) is used implicitly in "LODSD" command below |
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) |
@@: |
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 |
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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) |
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DEBUGF 1, "%s (id=%d)\n", Vortex86SoCname, [Vortex86CPUid]:1 |
jmp .Vortex86end ; Say what we have found (CPU name and id) and exit |
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.nullPCIoutput: ; Emulators and non-Vortex86 CPU computers will usually return \0 in this register |
DEBUGF 1, "0 (NULL)\n" |
jmp .Vortex86end |
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.unknownVortex86: |
mov [Vortex86CPUid], cl ; Save the CPUid (Vortex86SoCnum+1=Unknown Vortex86) |
DEBUGF 1, "unknown Vortex86 CPU (has id=%d, last known is %d)\n", [Vortex86CPUid]:1, Vortex86SoCnum |
jmp .Vortex86end |
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.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" |
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.Vortex86end: |
Property changes: |
Added: svn:eol-style |
+native |
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Added: svn:keywords |
+Revision |
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