[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 1/4] xen: arm64: Add Basic Platform support for APM X-Gene Storm.
This patch adds following things: Early printk support for APM X-Gene platform. Initial platform stubs for APM X-Gene. Signed-off-by: Anup Patel <anup.patel@xxxxxxxxxx> Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@xxxxxxxxxx> --- xen/arch/arm/Rules.mk | 5 +++ xen/arch/arm/arm64/debug-xgene-storm.inc | 55 ++++++++++++++++++++++++++++++ xen/arch/arm/platforms/Makefile | 1 + xen/arch/arm/platforms/xgene-storm.c | 57 ++++++++++++++++++++++++++++++++ 4 files changed, 118 insertions(+) create mode 100644 xen/arch/arm/arm64/debug-xgene-storm.inc create mode 100644 xen/arch/arm/platforms/xgene-storm.c diff --git a/xen/arch/arm/Rules.mk b/xen/arch/arm/Rules.mk index bd79b26..b36120e 100644 --- a/xen/arch/arm/Rules.mk +++ b/xen/arch/arm/Rules.mk @@ -77,6 +77,11 @@ EARLY_PRINTK_INC := 8250 EARLY_UART_BASE_ADDRESS := 0x01c28000 EARLY_UART_REG_SHIFT := 2 endif +ifeq ($(CONFIG_EARLY_PRINTK), xgene-storm) +EARLY_PRINTK_INC := xgene-storm +EARLY_PRINTK_BAUD := 115200 +EARLY_UART_BASE_ADDRESS := 0x1c020000 +endif ifneq ($(EARLY_PRINTK_INC),) EARLY_PRINTK := y diff --git a/xen/arch/arm/arm64/debug-xgene-storm.inc b/xen/arch/arm/arm64/debug-xgene-storm.inc new file mode 100644 index 0000000..ebbb8d2 --- /dev/null +++ b/xen/arch/arm/arm64/debug-xgene-storm.inc @@ -0,0 +1,55 @@ +/* + * xen/arch/arm/arm64/debug-xgene-storm.inc + * + * X-Gene Storm specific debug code + * + * Copyright (c) 2013 Applied Micro. + * + * 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. + */ + +#include <xen/8250-uart.h> + +#define XGENE_STORM_UART_LSR 0x14 +#define XGENE_STORM_UART_THR 0x00 + +/* UART initialization + * rb: register which contains the UART base address + * rc: scratch register 1 + * rd: scratch register 2 */ +.macro early_uart_init rb rc rd +.endm + +/* UART wait UART to be ready to transmit + * xb: register which contains the UART base address + * c: scratch register */ +.macro early_uart_ready xb c +1: + ldrb w\c, [\xb, #XGENE_STORM_UART_LSR] + and w\c, w\c, #UART_LSR_THRE + cmp w\c, #UART_LSR_THRE + b.ne 1b +.endm + +/* UART transmit character + * xb: register which contains the UART base address + * wt: register which contains the character to transmit */ +.macro early_uart_transmit xb wt + /* UART_THR transmit holding */ + strb \wt, [\xb, #XGENE_STORM_UART_THR] +.endm + +/* + * Local variables: + * mode: ASM + * indent-tabs-mode: nil + * End: + */ diff --git a/xen/arch/arm/platforms/Makefile b/xen/arch/arm/platforms/Makefile index 4aa82e8..8a6709f 100644 --- a/xen/arch/arm/platforms/Makefile +++ b/xen/arch/arm/platforms/Makefile @@ -2,3 +2,4 @@ obj-y += vexpress.o obj-y += exynos5.o obj-y += midway.o obj-y += omap5.o +obj-y += xgene-storm.o diff --git a/xen/arch/arm/platforms/xgene-storm.c b/xen/arch/arm/platforms/xgene-storm.c new file mode 100644 index 0000000..8e2b3b6 --- /dev/null +++ b/xen/arch/arm/platforms/xgene-storm.c @@ -0,0 +1,57 @@ +/* + * xen/arch/arm/platforms/xgene-storm.c + * + * Applied Micro's X-Gene specific settings + * + * Pranavkumar Sawargaonkar <psawargaonkar@xxxxxxx> + * Anup Patel <apatel@xxxxxxx> + * Copyright (c) 2013 Applied Micro. + * + * 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. + */ + +#include <xen/config.h> +#include <xen/device_tree.h> +#include <xen/domain_page.h> +#include <xen/mm.h> +#include <xen/vmap.h> +#include <asm/platform.h> +#include <asm/early_printk.h> + +static void xgene_storm_reset(void) +{ +} + +static int xgene_storm_init(void) +{ + return 0; +} + +static const char const *xgene_storm_dt_compat[] __initdata = +{ + "apm,xgene-storm", + NULL +}; + +PLATFORM_START(xgene_storm, "APM X-GENE STORM") + .compatible = xgene_storm_dt_compat, + .init = xgene_storm_init, + .reset = xgene_storm_reset, +PLATFORM_END + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * indent-tabs-mode: nil + * End: + */ -- 1.8.2.1 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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