From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UPShO-0001gf-GF for barebox@lists.infradead.org; Tue, 09 Apr 2013 07:10:35 +0000 Date: Tue, 9 Apr 2013 09:10:32 +0200 From: Sascha Hauer Message-ID: <20130409071032.GC1906@pengutronix.de> References: <1365200755-8102-1-git-send-email-vicencb@gmail.com> <1365200755-8102-2-git-send-email-vicencb@gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1365200755-8102-2-git-send-email-vicencb@gmail.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: [PATCH] OMAP4: add command to select next boot device priority To: Vicente Bergas Cc: barebox@lists.infradead.org On Sat, Apr 06, 2013 at 12:25:55AM +0200, Vicente Bergas wrote: > On OMAP4 SoC there is a SAR memory region (Save & Rescue) > where the ROM code reads the device to boot from. > This patch adds a way to set this. > > Signed-off-by: Vicente Bergas > --- > arch/arm/mach-omap/Makefile | 1 + > arch/arm/mach-omap/boot_order.c | 83 +++++++++++++++++++++++++ > arch/arm/mach-omap/include/mach/omap4-silicon.h | 20 ++++++ > arch/arm/mach-omap/omap4_generic.c | 20 ++++++ > commands/Kconfig | 7 +++ > 5 files changed, 131 insertions(+) > create mode 100644 arch/arm/mach-omap/boot_order.c > > diff --git a/arch/arm/mach-omap/Makefile b/arch/arm/mach-omap/Makefile > index d9e00f7..973068d 100644 > --- a/arch/arm/mach-omap/Makefile > +++ b/arch/arm/mach-omap/Makefile > @@ -30,4 +30,5 @@ obj-$(CONFIG_OMAP_GPMC) += gpmc.o devices-gpmc-nand.o > obj-$(CONFIG_SHELL_NONE) += xload.o > obj-$(CONFIG_MFD_TWL6030) += omap4_twl6030_mmc.o > obj-$(CONFIG_OMAP4_USBBOOT) += omap4_rom_usb.o > +obj-$(CONFIG_CMD_BOOT_ORDER) += boot_order.o > obj-y += gpio.o > diff --git a/arch/arm/mach-omap/boot_order.c b/arch/arm/mach-omap/boot_order.c > new file mode 100644 > index 0000000..2f2846d > --- /dev/null > +++ b/arch/arm/mach-omap/boot_order.c > @@ -0,0 +1,83 @@ > +/* > + * boot_order.c - configure omap warm boot > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License version 2 > + * as published by the Free Software Foundation. > + * > + * 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 > +#include > +#include > +#include > + > +struct bootsrc { > + const char *name; > + uint32_t sar; > +}; > + > +const struct bootsrc src_list[] = { > + {"xip" , OMAP44XX_SAR_BOOT_XIP }, > + {"xipwait" , OMAP44XX_SAR_BOOT_XIPWAIT }, > + {"nand" , OMAP44XX_SAR_BOOT_NAND }, > + {"onenand" , OMAP44XX_SAR_BOOT_ONENAND }, > + {"mmc1" , OMAP44XX_SAR_BOOT_MMC1 }, > + {"mmc2_1" , OMAP44XX_SAR_BOOT_MMC2_1 }, > + {"mmc2_2" , OMAP44XX_SAR_BOOT_MMC2_2 }, > + {"uart" , OMAP44XX_SAR_BOOT_UART }, > + {"usb_1" , OMAP44XX_SAR_BOOT_USB_1 }, > + {"usb_ulpi", OMAP44XX_SAR_BOOT_USB_ULPI}, > + {"usb_2" , OMAP44XX_SAR_BOOT_USB_2 }, > +}; > + > +static uint32_t parse_device(char *str) > +{ > + int i; > + > + for (i = 0; i < ARRAY_SIZE(src_list); i++) { > + if (strcmp(str, src_list[i].name) == 0) > + return src_list[i].sar; > + } > + printf("Unknown device '%s'\n", str); > + return OMAP44XX_SAR_BOOT_VOID; > +} > + > +static int cmd_boot_order(int argc, char *argv[]) > +{ > + uint32_t device_list[] = { > + OMAP44XX_SAR_BOOT_VOID, > + OMAP44XX_SAR_BOOT_VOID, > + OMAP44XX_SAR_BOOT_VOID, > + OMAP44XX_SAR_BOOT_VOID, > + }; > + int i; > + > + if (argc < 2) > + return COMMAND_ERROR_USAGE; > + for (i = 0; i + 1 < argc && i < ARRAY_SIZE(device_list); i++) { > + device_list[i] = parse_device(argv[i + 1]); > + if (device_list[i] == OMAP44XX_SAR_BOOT_VOID) > + return COMMAND_ERROR_USAGE; > + } > + omap4_set_warmboot_order(device_list); > + return 0; > +} > + > +static const __maybe_unused char cmd_boot_order_help[] = > +"Usage: boot_order []\n" > +"Set warm boot order of up to four devices.\n" > +"Each device can be one of:\n" > +"xip xipwait nand onenand mmc1 mmc2_1 mmc2_2 uart usb_1 usb_ulpi usb_2\n"; > + > +BAREBOX_CMD_START(boot_order) > + .cmd = cmd_boot_order, > + .usage = "boot_order []", > + BAREBOX_CMD_HELP(cmd_boot_order_help) > + BAREBOX_CMD_COMPLETE(empty_complete) > +BAREBOX_CMD_END > diff --git a/arch/arm/mach-omap/include/mach/omap4-silicon.h b/arch/arm/mach-omap/include/mach/omap4-silicon.h > index 9e82435..666e721 100644 > --- a/arch/arm/mach-omap/include/mach/omap4-silicon.h > +++ b/arch/arm/mach-omap/include/mach/omap4-silicon.h > @@ -161,6 +161,25 @@ > #define OMAP44XX_PRM_RSTCTRL_RESET 0x01 > > /* > + * SAR (Save & Rescue) memory region > + */ > +#define OMAP44XX_SAR_RAM_BASE 0x4a326000 > +#define OMAP44XX_SAR_CH_ADDRESS (OMAP44XX_SAR_RAM_BASE + 0xA00) > +#define OMAP44XX_SAR_CH_START (OMAP44XX_SAR_RAM_BASE + 0xA0C) > +#define OMAP44XX_SAR_BOOT_VOID 0x00 > +#define OMAP44XX_SAR_BOOT_XIP 0x01 > +#define OMAP44XX_SAR_BOOT_XIPWAIT 0x02 > +#define OMAP44XX_SAR_BOOT_NAND 0x03 > +#define OMAP44XX_SAR_BOOT_ONENAND 0x04 > +#define OMAP44XX_SAR_BOOT_MMC1 0x05 > +#define OMAP44XX_SAR_BOOT_MMC2_1 0x06 > +#define OMAP44XX_SAR_BOOT_MMC2_2 0x07 > +#define OMAP44XX_SAR_BOOT_UART 0x43 > +#define OMAP44XX_SAR_BOOT_USB_1 0x45 > +#define OMAP44XX_SAR_BOOT_USB_ULPI 0x46 > +#define OMAP44XX_SAR_BOOT_USB_2 0x47 > + > +/* > * Non-secure SRAM Addresses > * Non-secure RAM starts at 0x40300000 for GP devices. But we keep SRAM_BASE > * at 0x40304000(EMU base) so that our code works for both EMU and GP > @@ -212,6 +231,7 @@ void omap4_ddr_init(const struct ddr_regs *, const struct dpll_param *); > void omap4_power_i2c_send(u32); > unsigned int omap4_revision(void); > noinline int omap4_scale_vcores(unsigned vsel0_pin); > +void omap4_set_warmboot_order(u32 *device_list); > > #endif > > diff --git a/arch/arm/mach-omap/omap4_generic.c b/arch/arm/mach-omap/omap4_generic.c > index e1edffa..790746b 100644 > --- a/arch/arm/mach-omap/omap4_generic.c > +++ b/arch/arm/mach-omap/omap4_generic.c > @@ -41,6 +41,26 @@ void __noreturn reset_cpu(unsigned long addr) > while (1); > } > > +void omap4_set_warmboot_order(u32 *device_list) > +{ > + const u32 CH[] = { > + 0xCF00AA01, > + 0x0000000C, > + (device_list[0] << 16) | 0x0000, > + (device_list[2] << 16) | device_list[1], > + 0x0000 | device_list[3], > + 0x00000000, > + 0x00000000, > + 0x00000000, > + 0x00000000 > + }; > + int i; > + > + for (i = 0; i < ARRAY_SIZE(CH); i++) > + writel(CH[i], OMAP44XX_SAR_CH_START + i*sizeof(CH[0])); > + writel(OMAP44XX_SAR_CH_START, OMAP44XX_SAR_CH_ADDRESS); > +} > + > #define WATCHDOG_WSPR 0x48 > #define WATCHDOG_WWPS 0x34 > > diff --git a/commands/Kconfig b/commands/Kconfig > index 0062758..bef83e0 100644 > --- a/commands/Kconfig > +++ b/commands/Kconfig > @@ -474,6 +474,13 @@ config CMD_POWEROFF > depends on HAS_POWEROFF > prompt "poweroff" > > +config CMD_BOOT_ORDER > + tristate > + depends on ARCH_OMAP4 > + prompt "boot_order" > + help > + A command to choose the next boot device on a warm reset. > + Please move the config option to arch/arm/mach-omap/ also. Otherwise looks good. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox