From 69ed59f083a083fd96d08b5f6d54f2c80f267f03 Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Tue, 14 May 2002 17:10:17 +0000 Subject: 2001-05-14 Till Straumann * bootloader/misc.c, console/Makefile.am, console/console.c, console/consoleIo.h, console/inch.c, console/polled_io.c, console/uart.c, console/uart.h, include/bsp.h, irq/Makefile.am, irq/irq.c, irq/irq.h, irq/irq_init.c, openpic/openpic.c, openpic/openpic.h, pci/Makefile.am, pci/pci.c, pci/pci.h, residual/Makefile.am, start/start.S, startup/bspstart.c, vectors/vectors.S, vectors/vectors.h, vectors/vectors_init.c: Per PR216, "libbsp/powerpc/shared" BSP has been modified considerably with the goal to make it more flexible and reusable by other BSPs. The main strategies were: - eliminate hardcoded base addresses; devices use offsets and a BSP defined base address. - separate functionality into different files (e.g. reboot from inch.c to reboot.c) which can be overridden by a 'derived' BSP. - separate initialization code into separate files (e.g. PCI bridge detection/initialization was separated from the more generic PCI access routines), also to make it easier for 'derived' BSPs to substitute their own initialization code. There are also a couple of enhancements and fixes: - IRQ handling code now has a hook for attaching a VME bridge. - OpenPIC is now explicitely initialized (polarities, senses). Eliminated the implicit assumption on the presence of an ISA PIC. - UART and console driver now supports more than 1 port. The current maximum of 2 can easily be extended by enlarging a table (it would even be easier if the ISR API was not broken by design). - fixed polled_io.c so it correctly supports console on COM2 - fixed TLB invalidation code (start.S). - exception handler prints a stack backtrace. - added BSP_pciFindDevice() to scan the pci bus for a particular vendor/device/instance. --- c/src/lib/libbsp/powerpc/shared/start/start.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'c/src/lib/libbsp/powerpc/shared/start/start.S') diff --git a/c/src/lib/libbsp/powerpc/shared/start/start.S b/c/src/lib/libbsp/powerpc/shared/start/start.S index f2cedc9a6c..4746ab3a46 100644 --- a/c/src/lib/libbsp/powerpc/shared/start/start.S +++ b/c/src/lib/libbsp/powerpc/shared/start/start.S @@ -192,7 +192,7 @@ flush_tlbs: lis r20, 0x1000 1: addic. r20, r20, -0x1000 tlbie r20 - blt 1b + bgt 1b sync blr -- cgit v1.2.3