ARM: s3c: mark as deprecated and schedule removal

The Samsung S3C24xx and S3C64xx platforms are very old designs. S3C2416
was introduced in 2008 and S3C6410 in 2009/2010.  They are not widely
available anymore - out-of-stock on FriendlyArm (one of manufacturers of
boards) and only few specialist stores still offer them for quite a high
price.

The community around these platforms was not very active, so I suspect
no one really uses them anymore. Maintenance takes precious time so
there is little sense in keeping them alive if there are no real users.

Let's mark all S3C24xx and S3C64xx platforms as deprecated and mention
possible removal in after 2022 for the first and 2024 for the lattere.
The deprecation message will be as text in Kconfig, build message (not a
warning though) and runtime print error.

If there are any users, they might respond and postpone the removal.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Tomasz Figa <tomasz.figa@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20220407072319.75614-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Author: krzk

arch/arm/mach-s3c/Kconfig.s3c24xx

@@ -4,9 +4,8 @@
 #		http://www.samsung.com/
 #
 # Copyright 2007 Simtec Electronics
-
 menuconfig ARCH_S3C24XX
-	bool "Samsung S3C24XX SoCs"
+	bool "Samsung S3C24XX SoCs (deprecated, see help)"
 	depends on ARCH_MULTI_V4T || ARCH_MULTI_V5
 	depends on CPU_LITTLE_ENDIAN
 	select ATAGS
@@ -22,6 +21,11 @@ menuconfig ARCH_S3C24XX
 	  (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
 	  Samsung SMDK2410 development board (and derivatives).
 
+	  The platform is deprecated and scheduled for removal. Please reach to
+	  the maintainers of the platform and linux-samsung-soc@vger.kernel.org if
+	  you still use it.
+	  Without such feedback, the platform will be removed after 2022.
+
 if ARCH_S3C24XX
 
 config PLAT_S3C24XX

arch/arm/mach-s3c/Kconfig.s3c64xx

@@ -4,7 +4,7 @@
 #	Simtec Electronics, Ben Dooks <ben@simtec.co.uk>
 
 menuconfig ARCH_S3C64XX
-	bool "Samsung S3C64XX"
+	bool "Samsung S3C64XX (deprecated, see help)"
 	depends on ARCH_MULTI_V6
 	select ARM_AMBA
 	select ARM_VIC
@@ -24,6 +24,11 @@ menuconfig ARCH_S3C64XX
 	help
 	  Samsung S3C64XX series based systems
 
+	  The platform is deprecated and scheduled for removal. Please reach to
+	  the maintainers of the platform and linux-samsung-soc@vger.kernel.org if
+	  you still use it.
+	  Without such feedback, the platform will be removed after 2024.
+
 if ARCH_S3C64XX
 
 # Configuration options for the S3C6410 CPU

arch/arm/mach-s3c/cpu.c

@@ -28,4 +28,5 @@ void __init s3c64xx_init_cpu(void)
 	}
 
 	pr_info("Samsung CPU ID: 0x%08lx\n", samsung_cpu_id);
+	pr_err("The platform is deprecated and scheduled for removal. Please reach to the maintainers of the platform and linux-samsung-soc@vger.kernel.org if you still use it.  Without such feedback, the platform will be removed after 2022.\n");
 }

arch/arm/mach-s3c/init.c

@@ -59,6 +59,8 @@ void __init s3c_init_cpu(unsigned long idcode,
 
 	if (cpu->map_io)
 		cpu->map_io();
+
+	pr_err("The platform is deprecated and scheduled for removal. Please reach to the maintainers of the platform and linux-samsung-soc@vger.kernel.org if you still use it.  Without such feedback, the platform will be removed after 2022.\n");
 }
 
 /* s3c24xx_init_clocks

arch/arm/mach-s3c/s3c24xx.c

@@ -678,3 +678,10 @@ struct platform_device s3c2410_device_dclk = {
 	},
 };
 #endif
+
+#ifndef CONFIG_COMPILE_TEST
+#pragma message "The platform is deprecated and scheduled for removal. " \
+		"Please reach to the maintainers of the platform " \
+		"and linux-samsung-soc@vger.kernel.org if you still use it." \
+		"Without such feedback, the platform will be removed after 2022."
+#endif

arch/arm/mach-s3c/s3c64xx.c

@@ -425,3 +425,10 @@ static int __init s3c64xx_init_irq_eint(void)
 	return 0;
 }
 arch_initcall(s3c64xx_init_irq_eint);
+
+#ifndef CONFIG_COMPILE_TEST
+#pragma message "The platform is deprecated and scheduled for removal. " \
+		"Please reach to the maintainers of the platform " \
+		"and linux-samsung-soc@vger.kernel.org if you still use it." \
+		"Without such feedback, the platform will be removed after 2024."
+#endif