From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from exprod5og107.obsmtp.com ([64.18.0.184]) by merlin.infradead.org with smtps (Exim 4.76 #1 (Red Hat Linux)) id 1RpfZq-0004j3-KB for barebox@lists.infradead.org; Tue, 24 Jan 2012 12:34:21 +0000 From: Renaud Barbier Date: Tue, 24 Jan 2012 12:34:01 +0000 Message-Id: <1327408443-3519-8-git-send-email-renaud.barbier@ge.com> In-Reply-To: <1327408443-3519-1-git-send-email-renaud.barbier@ge.com> References: <1327408443-3519-1-git-send-email-renaud.barbier@ge.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 7/9] Add-ons to the PPC library to support the mpc8xxx. To: barebox@lists.infradead.org * Added suport for the mpc8xxx clock source. * Call functions in board_init_r to initialize the mpc85xx. * Added reloc.S (used in mpc85xx/start.S) Signed-off-by: Renaud Barbier --- arch/ppc/lib/Makefile | 2 + arch/ppc/lib/board.c | 24 ++++++++++++++++- arch/ppc/lib/reloc.S | 50 ++++++++++++++++++++++++++++++++++++ arch/ppc/lib/time-8xxx.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 139 insertions(+), 1 deletions(-) create mode 100644 arch/ppc/lib/reloc.S create mode 100644 arch/ppc/lib/time-8xxx.c diff --git a/arch/ppc/lib/Makefile b/arch/ppc/lib/Makefile index 2af000a..8d65760 100644 --- a/arch/ppc/lib/Makefile +++ b/arch/ppc/lib/Makefile @@ -5,9 +5,11 @@ obj-y += kgdb.o obj-y += ppcstring.o obj-y += ticks.o obj-$(CONFIG_MPC5200) += time-mpc5200.o +obj-$(CONFIG_ARCH_MPC8XXX) += time-8xxx.o obj-y += misc.o obj-$(CONFIG_CMD_BOOTM) += ppclinux.o obj-y += board_data.o obj-$(CONFIG_MODULES) += module.o obj-y += crtsavres.o +obj-y += reloc.o diff --git a/arch/ppc/lib/board.c b/arch/ppc/lib/board.c index a840c75..8ef2397 100644 --- a/arch/ppc/lib/board.c +++ b/arch/ppc/lib/board.c @@ -29,6 +29,10 @@ #include #include #include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; /************************************************************************ * @@ -40,12 +44,16 @@ ************************************************************************ */ -void board_init_r (ulong end_of_ram) +void board_init_r (ulong dest_addr) { unsigned long malloc_end; asm ("sync ; isync"); +#ifdef CONFIG_MPC85xx + _text_base = dest_addr; +#endif + /* * FIXME: 128k stack size. Is this enough? should * it be configurable? @@ -62,6 +70,20 @@ void board_init_r (ulong end_of_ram) */ trap_init (0); +#if defined(CONFIG_BOARD_EARLY_INIT_R) + board_early_init_r (); +#endif + +#ifdef CONFIG_ARCH_MPC8XXX + cpu_init_r(); +#endif + /* + * Enable Interrupts + */ +#ifdef CONFIG_USE_IRQ + interrupt_init (); +#endif + /* Initialization complete - start the monitor */ start_barebox(); diff --git a/arch/ppc/lib/reloc.S b/arch/ppc/lib/reloc.S new file mode 100644 index 0000000..b1840fc --- /dev/null +++ b/arch/ppc/lib/reloc.S @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2009 Wolfgang Denk + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + + +#include + + .file "reloc.S" + + .text +#ifndef CONFIG_NAND_SPL + /* + * Function: relocate entries for one exception vector + */ + .globl trap_reloc + .type trap_reloc, @function +trap_reloc: + lwz r0, 0(r7) /* hdlr ... */ + add r0, r0, r3 /* ... += dest_addr */ + stw r0, 0(r7) + + lwz r0, 4(r7) /* int_return ... */ + add r0, r0, r3 /* ... += dest_addr */ + stw r0, 4(r7) + + lwz r0, 8(r7) /* transfer_to_handler ...*/ + add r0, r0, r3 /* ... += dest_addr */ + stw r0, 8(r7) + + blr + .size trap_reloc, .-trap_reloc +#endif diff --git a/arch/ppc/lib/time-8xxx.c b/arch/ppc/lib/time-8xxx.c new file mode 100644 index 0000000..662217d --- /dev/null +++ b/arch/ppc/lib/time-8xxx.c @@ -0,0 +1,64 @@ +/* + * (C) Copyright 2000, 2001 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include +#include +#include +#include +#include +#include + +/* ------------------------------------------------------------------------- */ + +static int init_timebase (void) +{ + /* reset */ + asm ("li 3,0 ; mttbu 3 ; mttbl 3 ;"); + + return (0); +} +/* ------------------------------------------------------------------------- */ + +uint64_t ppc_clocksource_read(void) +{ + return get_ticks(); +} + +static struct clocksource cs = { + .read = ppc_clocksource_read, + .mask = CLOCKSOURCE_MASK(CONFIG_CLOCKSOURCE_MASK), +}; + +static int clocksource_init (void) +{ + init_timebase(); + + clocks_calc_mult_shift(&cs.mult, &cs.shift, get_timebase_clock(), + 1000000000L, 10); + + init_clock(&cs); + + return 0; +} + +core_initcall(clocksource_init); -- 1.7.1 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox