HelenOS sources
BCM2835_UART0_BASE 77 boot/arch/arm32/include/arch/main.h #define BCM2835_UART0_DR (BCM2835_UART0_BASE + 0x00)
BCM2835_UART0_BASE 78 boot/arch/arm32/include/arch/main.h #define BCM2835_UART0_FR (BCM2835_UART0_BASE + 0x18)
BCM2835_UART0_BASE 79 boot/arch/arm32/include/arch/main.h #define BCM2835_UART0_ILPR (BCM2835_UART0_BASE + 0x20)
BCM2835_UART0_BASE 80 boot/arch/arm32/include/arch/main.h #define BCM2835_UART0_IBRD (BCM2835_UART0_BASE + 0x24)
BCM2835_UART0_BASE 81 boot/arch/arm32/include/arch/main.h #define BCM2835_UART0_FBRD (BCM2835_UART0_BASE + 0x28)
BCM2835_UART0_BASE 82 boot/arch/arm32/include/arch/main.h #define BCM2835_UART0_LCRH (BCM2835_UART0_BASE + 0x2C)
BCM2835_UART0_BASE 83 boot/arch/arm32/include/arch/main.h #define BCM2835_UART0_CR (BCM2835_UART0_BASE + 0x30)
BCM2835_UART0_BASE 84 boot/arch/arm32/include/arch/main.h #define BCM2835_UART0_ICR (BCM2835_UART0_BASE + 0x44)
HelenOS homepage, sources at GitHub