From 5de851403b01489b493fa83137ad990b8ce60d1c Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Thu, 26 Jun 2008 17:36:39 +0200 Subject: ppc4xx: Rework 440GX UIC handling This patch reworks the 440GX interrupt handling so that the common 4xx code can be used. The 440GX is an exception to all other 4xx variants by having the cascading interrupt vectors not on UIC0 but on a special UIC named UICB0 (UIC Base 0). With this patch now, U-Boot references the 440GX UICB0 when UIC0 is selected. And the common 4xx interrupt handling is simpler without any 440GX special cases. Also some additional cleanup to cpu/ppc4xx/interrupt.c is done. Signed-off-by: Stefan Roese --- board/sandburst/metrobox/metrobox.c | 50 +++++++++++++++++++++++-------------- 1 file changed, 31 insertions(+), 19 deletions(-) (limited to 'board/sandburst/metrobox') diff --git a/board/sandburst/metrobox/metrobox.c b/board/sandburst/metrobox/metrobox.c index 97049013e1..63c91dc59c 100644 --- a/board/sandburst/metrobox/metrobox.c +++ b/board/sandburst/metrobox/metrobox.c @@ -185,36 +185,48 @@ int board_early_init_f (void) /*--------------------------------------------------------------------+ * Setup the interrupt controller polarities, triggers, etc. +-------------------------------------------------------------------*/ - mtdcr (uic0sr, 0xffffffff); /* clear all */ - mtdcr (uic0er, 0x00000000); /* disable all */ - mtdcr (uic0cr, 0x00000000); /* all non- critical */ - mtdcr (uic0pr, 0xfffffe03); /* polarity */ - mtdcr (uic0tr, 0x01c00000); /* trigger edge vs level */ - mtdcr (uic0vr, 0x00000001); /* int31 highest, base=0x000 */ - mtdcr (uic0sr, 0xffffffff); /* clear all */ - + /* + * Because of the interrupt handling rework to handle 440GX interrupts + * with the common code, we needed to change names of the UIC registers. + * Here the new relationship: + * + * U-Boot name 440GX name + * ----------------------- + * UIC0 UICB0 + * UIC1 UIC0 + * UIC2 UIC1 + * UIC3 UIC2 + */ mtdcr (uic1sr, 0xffffffff); /* clear all */ mtdcr (uic1er, 0x00000000); /* disable all */ - mtdcr (uic1cr, 0x00000000); /* all non-critical */ - mtdcr (uic1pr, 0xffffc8ff); /* polarity */ - mtdcr (uic1tr, 0x00ff0000); /* trigger edge vs level */ + mtdcr (uic1cr, 0x00000000); /* all non- critical */ + mtdcr (uic1pr, 0xfffffe03); /* polarity */ + mtdcr (uic1tr, 0x01c00000); /* trigger edge vs level */ mtdcr (uic1vr, 0x00000001); /* int31 highest, base=0x000 */ mtdcr (uic1sr, 0xffffffff); /* clear all */ mtdcr (uic2sr, 0xffffffff); /* clear all */ mtdcr (uic2er, 0x00000000); /* disable all */ mtdcr (uic2cr, 0x00000000); /* all non-critical */ - mtdcr (uic2pr, 0xffff83ff); /* polarity */ - mtdcr (uic2tr, 0x00ff8c0f); /* trigger edge vs level */ + mtdcr (uic2pr, 0xffffc8ff); /* polarity */ + mtdcr (uic2tr, 0x00ff0000); /* trigger edge vs level */ mtdcr (uic2vr, 0x00000001); /* int31 highest, base=0x000 */ mtdcr (uic2sr, 0xffffffff); /* clear all */ - mtdcr (uicb0sr, 0xfc000000); /* clear all */ - mtdcr (uicb0er, 0x00000000); /* disable all */ - mtdcr (uicb0cr, 0x00000000); /* all non-critical */ - mtdcr (uicb0pr, 0xfc000000); - mtdcr (uicb0tr, 0x00000000); - mtdcr (uicb0vr, 0x00000001); + mtdcr (uic3sr, 0xffffffff); /* clear all */ + mtdcr (uic3er, 0x00000000); /* disable all */ + mtdcr (uic3cr, 0x00000000); /* all non-critical */ + mtdcr (uic3pr, 0xffff83ff); /* polarity */ + mtdcr (uic3tr, 0x00ff8c0f); /* trigger edge vs level */ + mtdcr (uic3vr, 0x00000001); /* int31 highest, base=0x000 */ + mtdcr (uic3sr, 0xffffffff); /* clear all */ + + mtdcr (uic0sr, 0xfc000000); /* clear all */ + mtdcr (uic0er, 0x00000000); /* disable all */ + mtdcr (uic0cr, 0x00000000); /* all non-critical */ + mtdcr (uic0pr, 0xfc000000); + mtdcr (uic0tr, 0x00000000); + mtdcr (uic0vr, 0x00000001); fpga_init(); -- cgit