From: Florian Fainelli Date: Mon, 21 Feb 2011 13:28:02 +0000 (+0100) Subject: MIPS: Alchemy: Fix reset for MTX-1 and XXS1500 X-Git-Tag: upstream/snapshot3+hdmi~11271^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9ced975711d605d7deb27ef027e0f9816a51b479;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git MIPS: Alchemy: Fix reset for MTX-1 and XXS1500 Since commit 32fd6901 (MIPS: Alchemy: get rid of common/reset.c) Alchemy-based boards use their own reset function. For MTX-1 and XXS1500, the reset function pokes at the BCSR.SYSTEM_RESET register, but this does not work. According to Bruno Randolf, this was not tested when written. Previously, the generic au1000_restart() routine called the board specific reset function, which for MTX-1 and XXS1500 did not work, but finally made a jump to the reset vector, which really triggers a system restart. Fix reboot for both targets by jumping to the reset vector. Signed-off-by: Florian Fainelli To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2093/ Acked-by: Bruno Randolf Signed-off-by: Ralf Baechle --- diff --git a/arch/mips/alchemy/mtx-1/board_setup.c b/arch/mips/alchemy/mtx-1/board_setup.c index 6398fa9..40b84b9 100644 --- a/arch/mips/alchemy/mtx-1/board_setup.c +++ b/arch/mips/alchemy/mtx-1/board_setup.c @@ -54,8 +54,8 @@ int mtx1_pci_idsel(unsigned int devsel, int assert); static void mtx1_reset(char *c) { - /* Hit BCSR.SYSTEM_CONTROL[SW_RST] */ - au_writel(0x00000000, 0xAE00001C); + /* Jump to the reset vector */ + __asm__ __volatile__("jr\t%0"::"r"(0xbfc00000)); } static void mtx1_power_off(void) diff --git a/arch/mips/alchemy/xxs1500/board_setup.c b/arch/mips/alchemy/xxs1500/board_setup.c index b43c918..80c521e 100644 --- a/arch/mips/alchemy/xxs1500/board_setup.c +++ b/arch/mips/alchemy/xxs1500/board_setup.c @@ -36,8 +36,8 @@ static void xxs1500_reset(char *c) { - /* Hit BCSR.SYSTEM_CONTROL[SW_RST] */ - au_writel(0x00000000, 0xAE00001C); + /* Jump to the reset vector */ + __asm__ __volatile__("jr\t%0"::"r"(0xbfc00000)); } static void xxs1500_power_off(void)