Finally got the logs ,with below setting ,previously mapped wrong physical offset
CONFIG_DEBUG_UART_PHYS=0x3f215040
CONFIG_DEBUG_UART_VIRT=0xf0215040

HI All, I am working on raspberri pi3 Trying to print "Uncompressing Linux...done, booting the kernel" (arch/arm/boot/compressed/misc.c). For this enabled below configs CONFIG_DEBUG_LL=y CONFIG_DEBUG_LL_UART_8250=y CONFIG_DEBUG_UART_PHYS=0x3f215000 CONFIG_DEBUG_UART_VIRT=0xf02215000 CONFIG_DEBUG_UNC...