From 6d9598e24d50a8c72f48a3864327484a30aaee44 Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Wed, 17 Nov 2010 10:59:31 +0000 Subject: ARM: mach-shmobile: Initial AG5 and AG5EVM support This patch adds initial support for Renesas SH-Mobile AG5. At this point the AG5 CPU support is limited to the ARM core, SCIF serial and a CMT timer together with L2 cache and the GIC. The AG5EVM board also supports Ethernet. Future patches will add support for GPIO, INTCS, CPGA and platform data / driver updates for devices such as IIC, LCDC, FSI, KEYSC, CEU and SDHI among others. The code in entry-macro.S will be cleaned up when the ARM IRQ demux code improvements have been merged. Depends on the AG5EVM mach-type recently registered but not yet present in arch/arm/tools/mach-types. As the AG5EVM board comes with 512MiB memory it is recommended to turn on HIGHMEM. Many thanks to Yoshii-san for initial bring up. Signed-off-by: Magnus Damm Signed-off-by: Paul Mundt --- arch/arm/mach-shmobile/include/mach/entry-macro.S | 78 +++++++++++++++++++++++ 1 file changed, 78 insertions(+) (limited to 'arch/arm/mach-shmobile/include/mach/entry-macro.S') diff --git a/arch/arm/mach-shmobile/include/mach/entry-macro.S b/arch/arm/mach-shmobile/include/mach/entry-macro.S index a285d13c7416..c0c264366d7a 100644 --- a/arch/arm/mach-shmobile/include/mach/entry-macro.S +++ b/arch/arm/mach-shmobile/include/mach/entry-macro.S @@ -20,6 +20,7 @@ .macro disable_fiq .endm +#if !defined(CONFIG_ARCH_SH73A0) .macro get_irqnr_preamble, base, tmp ldr \base, =INTFLGA .endm @@ -37,3 +38,80 @@ 1000: .endm +#else +/* + * arch/arm/mach-realview/include/mach/entry-macro.S + * + * Low-level IRQ helper macros for RealView platforms + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ +#include + + .macro get_irqnr_preamble, base, tmp + ldr \base, =(0xf0000100) + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + +/* + * The interrupt numbering scheme is defined in the + * interrupt controller spec. To wit: + * + * Interrupts 0-15 are IPI + * 16-28 are reserved + * 29-31 are local. We allow 30 to be used for the watchdog. + * 32-1020 are global + * 1021-1022 are reserved + * 1023 is "spurious" (no interrupt) + * + * For now, we ignore all local interrupts so only return an interrupt if it's + * between 30 and 1020. The test_for_ipi routine below will pick up on IPIs. + * + * A simple read from the controller will tell us the number of the highest + * priority enabled interrupt. We then just need to check whether it is in the + * valid range for an IRQ (30-1020 inclusive). + */ + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + + ldr \irqstat, [\base, #GIC_CPU_INTACK] + /* bits 12-10 = src CPU, 9-0 = int # */ + + ldr \tmp, =1021 + bic \irqnr, \irqstat, #0x1c00 + cmp \irqnr, #29 + cmpcc \irqnr, \irqnr + cmpne \irqnr, \tmp + cmpcs \irqnr, \irqnr + + .endm + + /* We assume that irqstat (the raw value of the IRQ acknowledge + * register) is preserved from the macro above. + * If there is an IPI, we immediately signal end of interrupt on the + * controller, since this requires the original irqstat value which + * we won't easily be able to recreate later. + */ + + .macro test_for_ipi, irqnr, irqstat, base, tmp + bic \irqnr, \irqstat, #0x1c00 + cmp \irqnr, #16 + strcc \irqstat, [\base, #GIC_CPU_EOI] + cmpcs \irqnr, \irqnr + .endm + + /* As above, this assumes that irqstat and base are preserved.. */ + + .macro test_for_ltirq, irqnr, irqstat, base, tmp + bic \irqnr, \irqstat, #0x1c00 + mov \tmp, #0 + cmp \irqnr, #29 + moveq \tmp, #1 + streq \irqstat, [\base, #GIC_CPU_EOI] + cmp \tmp, #0 + .endm +#endif -- cgit v1.2.3 From 45bbaae0dcddc275594e23f108cb68869eae7433 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Thu, 18 Nov 2010 16:07:27 +0900 Subject: ARM: mach-shmobile: Split out entry-macros in to GIC and INTC variants. Presently the entry macros are all globbed together, this simply splits them out in to their insular variants. Future work such as the GIC generalization will replace some of these and tidy the abstraction up further. Signed-off-by: Paul Mundt --- .../mach-shmobile/include/mach/entry-macro-gic.S | 89 ++++++++++++++++++ .../mach-shmobile/include/mach/entry-macro-intc.S | 39 ++++++++ arch/arm/mach-shmobile/include/mach/entry-macro.S | 104 +-------------------- 3 files changed, 132 insertions(+), 100 deletions(-) create mode 100644 arch/arm/mach-shmobile/include/mach/entry-macro-gic.S create mode 100644 arch/arm/mach-shmobile/include/mach/entry-macro-intc.S (limited to 'arch/arm/mach-shmobile/include/mach/entry-macro.S') diff --git a/arch/arm/mach-shmobile/include/mach/entry-macro-gic.S b/arch/arm/mach-shmobile/include/mach/entry-macro-gic.S new file mode 100644 index 000000000000..50b1f16d54a2 --- /dev/null +++ b/arch/arm/mach-shmobile/include/mach/entry-macro-gic.S @@ -0,0 +1,89 @@ +/* + * Copyright (C) 2010 Renesas Solutions Corp. + * + * 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; version 2 of the License. + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include +#include + + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + ldr \base, =(0xf0000100) + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + + /* + * The interrupt numbering scheme is defined in the + * interrupt controller spec. To wit: + * + * Interrupts 0-15 are IPI + * 16-28 are reserved + * 29-31 are local. We allow 30 to be used for the watchdog. + * 32-1020 are global + * 1021-1022 are reserved + * 1023 is "spurious" (no interrupt) + * + * For now, we ignore all local interrupts so only return an + * interrupt if it's between 30 and 1020. The test_for_ipi + * routine below will pick up on IPIs. + * + * A simple read from the controller will tell us the number of + * the highest priority enabled interrupt. We then just need to + * check whether it is in the valid range for an IRQ (30-1020 + * inclusive). + */ + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + + ldr \irqstat, [\base, #GIC_CPU_INTACK] + /* bits 12-10 = src CPU, 9-0 = int # */ + + ldr \tmp, =1021 + bic \irqnr, \irqstat, #0x1c00 + cmp \irqnr, #29 + cmpcc \irqnr, \irqnr + cmpne \irqnr, \tmp + cmpcs \irqnr, \irqnr + + .endm + + /* + * We assume that irqstat (the raw value of the IRQ acknowledge + * register) is preserved from the macro above. + * If there is an IPI, we immediately signal end of interrupt on the + * controller, since this requires the original irqstat value which + * we won't easily be able to recreate later. + */ + + .macro test_for_ipi, irqnr, irqstat, base, tmp + bic \irqnr, \irqstat, #0x1c00 + cmp \irqnr, #16 + strcc \irqstat, [\base, #GIC_CPU_EOI] + cmpcs \irqnr, \irqnr + .endm + + /* As above, this assumes that irqstat and base are preserved.. */ + + .macro test_for_ltirq, irqnr, irqstat, base, tmp + bic \irqnr, \irqstat, #0x1c00 + mov \tmp, #0 + cmp \irqnr, #29 + moveq \tmp, #1 + streq \irqstat, [\base, #GIC_CPU_EOI] + cmp \tmp, #0 + .endm diff --git a/arch/arm/mach-shmobile/include/mach/entry-macro-intc.S b/arch/arm/mach-shmobile/include/mach/entry-macro-intc.S new file mode 100644 index 000000000000..a285d13c7416 --- /dev/null +++ b/arch/arm/mach-shmobile/include/mach/entry-macro-intc.S @@ -0,0 +1,39 @@ +/* + * Copyright (C) 2008 Renesas Solutions Corp. + * + * 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; version 2 of the License. + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include +#include + + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + ldr \base, =INTFLGA + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + ldr \irqnr, [\base] + cmp \irqnr, #0 + beq 1000f + /* intevt to irq number */ + lsr \irqnr, \irqnr, #0x5 + subs \irqnr, \irqnr, #16 + +1000: + .endm diff --git a/arch/arm/mach-shmobile/include/mach/entry-macro.S b/arch/arm/mach-shmobile/include/mach/entry-macro.S index c0c264366d7a..26e401167605 100644 --- a/arch/arm/mach-shmobile/include/mach/entry-macro.S +++ b/arch/arm/mach-shmobile/include/mach/entry-macro.S @@ -1,5 +1,5 @@ /* - * Copyright (C) 2008 Renesas Solutions Corp. + * Copyright (C) 2010 Paul Mundt * * 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 @@ -14,104 +14,8 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ -#include -#include - - .macro disable_fiq - .endm - -#if !defined(CONFIG_ARCH_SH73A0) - .macro get_irqnr_preamble, base, tmp - ldr \base, =INTFLGA - .endm - - .macro arch_ret_to_user, tmp1, tmp2 - .endm - - .macro get_irqnr_and_base, irqnr, irqstat, base, tmp - ldr \irqnr, [\base] - cmp \irqnr, #0 - beq 1000f - /* intevt to irq number */ - lsr \irqnr, \irqnr, #0x5 - subs \irqnr, \irqnr, #16 - -1000: - .endm +#if defined(CONFIG_ARM_GIC) +#include #else -/* - * arch/arm/mach-realview/include/mach/entry-macro.S - * - * Low-level IRQ helper macros for RealView platforms - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - */ -#include - - .macro get_irqnr_preamble, base, tmp - ldr \base, =(0xf0000100) - .endm - - .macro arch_ret_to_user, tmp1, tmp2 - .endm - -/* - * The interrupt numbering scheme is defined in the - * interrupt controller spec. To wit: - * - * Interrupts 0-15 are IPI - * 16-28 are reserved - * 29-31 are local. We allow 30 to be used for the watchdog. - * 32-1020 are global - * 1021-1022 are reserved - * 1023 is "spurious" (no interrupt) - * - * For now, we ignore all local interrupts so only return an interrupt if it's - * between 30 and 1020. The test_for_ipi routine below will pick up on IPIs. - * - * A simple read from the controller will tell us the number of the highest - * priority enabled interrupt. We then just need to check whether it is in the - * valid range for an IRQ (30-1020 inclusive). - */ - - .macro get_irqnr_and_base, irqnr, irqstat, base, tmp - - ldr \irqstat, [\base, #GIC_CPU_INTACK] - /* bits 12-10 = src CPU, 9-0 = int # */ - - ldr \tmp, =1021 - bic \irqnr, \irqstat, #0x1c00 - cmp \irqnr, #29 - cmpcc \irqnr, \irqnr - cmpne \irqnr, \tmp - cmpcs \irqnr, \irqnr - - .endm - - /* We assume that irqstat (the raw value of the IRQ acknowledge - * register) is preserved from the macro above. - * If there is an IPI, we immediately signal end of interrupt on the - * controller, since this requires the original irqstat value which - * we won't easily be able to recreate later. - */ - - .macro test_for_ipi, irqnr, irqstat, base, tmp - bic \irqnr, \irqstat, #0x1c00 - cmp \irqnr, #16 - strcc \irqstat, [\base, #GIC_CPU_EOI] - cmpcs \irqnr, \irqnr - .endm - - /* As above, this assumes that irqstat and base are preserved.. */ - - .macro test_for_ltirq, irqnr, irqstat, base, tmp - bic \irqnr, \irqstat, #0x1c00 - mov \tmp, #0 - cmp \irqnr, #29 - moveq \tmp, #1 - streq \irqstat, [\base, #GIC_CPU_EOI] - cmp \tmp, #0 - .endm +#include #endif -- cgit v1.2.3 From 018a3fc7e3824ffcc80ad0160f9782c7d577c0c1 Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Tue, 28 Dec 2010 08:27:19 +0000 Subject: ARM: mach-shmobile: Rely on run-time IRQ handlers Remove now unused IRQ demux code. All R-Mobile and SH-Mobile processors should register IRQ demux handlers during run-time. Signed-off-by: Magnus Damm Signed-off-by: Paul Mundt --- .../mach-shmobile/include/mach/entry-macro-gic.S | 29 ---------- .../mach-shmobile/include/mach/entry-macro-intc.S | 61 ---------------------- arch/arm/mach-shmobile/include/mach/entry-macro.S | 23 ++++++-- arch/arm/mach-shmobile/include/mach/hardware.h | 3 -- 4 files changed, 18 insertions(+), 98 deletions(-) delete mode 100644 arch/arm/mach-shmobile/include/mach/entry-macro-gic.S delete mode 100644 arch/arm/mach-shmobile/include/mach/entry-macro-intc.S (limited to 'arch/arm/mach-shmobile/include/mach/entry-macro.S') diff --git a/arch/arm/mach-shmobile/include/mach/entry-macro-gic.S b/arch/arm/mach-shmobile/include/mach/entry-macro-gic.S deleted file mode 100644 index 48872dd15269..000000000000 --- a/arch/arm/mach-shmobile/include/mach/entry-macro-gic.S +++ /dev/null @@ -1,29 +0,0 @@ -/* - * Copyright (C) 2010 Renesas Solutions Corp. - * - * 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; version 2 of the License. - * - * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include -#include -#include - - .macro disable_fiq - .endm - - .macro get_irqnr_preamble, base, tmp - ldr \base, =(0xf0000100) - .endm - - .macro arch_ret_to_user, tmp1, tmp2 - .endm diff --git a/arch/arm/mach-shmobile/include/mach/entry-macro-intc.S b/arch/arm/mach-shmobile/include/mach/entry-macro-intc.S deleted file mode 100644 index f428c4db2b60..000000000000 --- a/arch/arm/mach-shmobile/include/mach/entry-macro-intc.S +++ /dev/null @@ -1,61 +0,0 @@ -/* - * Copyright (C) 2010 Magnus Damm - * Copyright (C) 2008 Renesas Solutions Corp. - * - * 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; version 2 of the License. - * - * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include - -#define INTCA_BASE 0xe6980000 -#define INTFLGA_OFFS 0x00000018 /* accept pending interrupt */ -#define INTEVTA_OFFS 0x00000020 /* vector number of accepted interrupt */ -#define INTLVLA_OFFS 0x00000030 /* priority level of accepted interrupt */ -#define INTLVLB_OFFS 0x00000034 /* previous priority level */ - - .macro disable_fiq - .endm - - .macro get_irqnr_preamble, base, tmp - ldr \base, =INTCA_BASE - .endm - - .macro arch_ret_to_user, tmp1, tmp2 - .endm - - .macro get_irqnr_and_base, irqnr, irqstat, base, tmp - /* The single INTFLGA read access below results in the following: - * - * 1. INTLVLB is updated with old priority value from INTLVLA - * 2. Highest priority interrupt is accepted - * 3. INTLVLA is updated to contain priority of accepted interrupt - * 4. Accepted interrupt vector is stored in INTFLGA and INTEVTA - */ - ldr \irqnr, [\base, #INTFLGA_OFFS] - - /* Restore INTLVLA with the value saved in INTLVLB. - * This is required to support interrupt priorities properly. - */ - ldrb \tmp, [\base, #INTLVLB_OFFS] - strb \tmp, [\base, #INTLVLA_OFFS] - - /* Handle invalid vector number case */ - cmp \irqnr, #0 - beq 1000f - - /* Convert vector to irq number, same as the evt2irq() macro */ - lsr \irqnr, \irqnr, #0x5 - subs \irqnr, \irqnr, #16 - -1000: - .endm diff --git a/arch/arm/mach-shmobile/include/mach/entry-macro.S b/arch/arm/mach-shmobile/include/mach/entry-macro.S index 26e401167605..d791f10eeac7 100644 --- a/arch/arm/mach-shmobile/include/mach/entry-macro.S +++ b/arch/arm/mach-shmobile/include/mach/entry-macro.S @@ -14,8 +14,21 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ -#if defined(CONFIG_ARM_GIC) -#include -#else -#include -#endif + + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + .endm + + .macro test_for_ipi, irqnr, irqstat, base, tmp + .endm + + .macro test_for_ltirq, irqnr, irqstat, base, tmp + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm diff --git a/arch/arm/mach-shmobile/include/mach/hardware.h b/arch/arm/mach-shmobile/include/mach/hardware.h index 3f0ef194603e..99264a5ce5e4 100644 --- a/arch/arm/mach-shmobile/include/mach/hardware.h +++ b/arch/arm/mach-shmobile/include/mach/hardware.h @@ -1,7 +1,4 @@ #ifndef __ASM_MACH_HARDWARE_H #define __ASM_MACH_HARDWARE_H -/* INTFLGA register - used by low level interrupt code in entry-macro.S */ -#define INTFLGA 0xe6980018 - #endif /* __ASM_MACH_HARDWARE_H */ -- cgit v1.2.3