Trace.ini file for STM32H753 tracing with Keil IDE and ULINK Pro

I'm thinking something like this, working blind...

FUNC void SetupTrace (void) {
 
 _WDWORD(0x5C001004,(_RDWORD(0x5C001004) | 0x00700000)); // DBGMCU_CR D3DBGCKEN, D1DBGCKEN, TRACECLKEN
 
 _WDWORD(0x5C004FB0, 0xC5ACCE55); // Unlock Funnel
 _WDWORD(0x5C003FB0, 0xC5ACCE55);
 
 //SWO current output divisor register
 //This divisor value (0x000000C7) corresponds to 400 MHz, with 2 MHz SWO Clock
 //To change it, you can use the following rule
 // value = (CPU Freq/sw speed)-1
 //_WDWORD(0x5C003010, 0xC7);
 
 //SWO selected pin protocol register
 _WDWORD(0x5C0030F0, 0x00000002);
 
 //Enable ITM input of SWO trace funnel
 _WDWORD(0x5C004000, (_RDWORD(0x5C004000) | 0x00000001));
 
 // ENABLE SWO PB3
 
 //RCC_AHB4ENR enable GPIOB clock
 _WDWORD(0x580244E0, (_RDWORD(0x580244E0) | 0x00000002));
 
 // Configure GPIOB pin 3 as AF
 _WDWORD(0x58020400, ((_RDWORD(0x58020400) & 0xffffff3f) | 0x00000080));
 
 // Configure GPIOB pin 3 Speed
 _WDWORD(0x58020408, (_RDWORD(0x58020408) | 0x00000080));
 
 // Force AF0 for GPIOB pin 3
 _WRDWORD(0x58020420, (_RDWORD(0x58020420) & 0xFFFF0FFF));
}
 
// Executed after reset via uVision's 'Reset'-button
FUNC void OnResetExec (void) {
 SetupTrace();
}
 
SetupTrace();

The Data Sheet talks about PE2..PE6, but the Reference Manual says it doesn't route "no synchronous trace output, that is, no TRACEDATA or TRACECLK pins"

The F4 initialization brings up GPIOE and the pins, you'd have to replicate that on the H7 for a starts. The registers will be at different locations.