TonyG 
Hello all, I've been trying to learn the s3c2440 from the ground up. I've had good luck (including with the attached code) when using another bootloader to run my programs, but am having some trouble when booting directly into my code. The attached code compiles just fine and runs as expected when loaded from another bootloader, presumably because it has already set the system clock to ~400MHz. However, when I boot directly into it, the system clock speed is significantly slower - somewhere close to my XTAL frequency of 12MHz instead of the 405MHz I'm trying to set the PLL to. The UART still works fine using my divider value and the program operates as designed - just too slow. It's driving me nuts, as it seems to follow the same process and PLL values as other codes out there. I've been troubleshooting for the last several days to no avail. Any ideas? I've attached my code, makefile, and linker script (the latter two I'm also learning as I go...). I'm using YAGARTO. Thank you for any input! -Tony