From 4ba66a9760722ccbb691b8f7116cad2f791cca7b Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 7 Mar 2018 22:23:24 +0100 Subject: arch: remove blackfin port The Analog Devices Blackfin port was added in 2007 and was rather active for a while, but all work on it has come to a standstill over time, as Analog have changed their product line-up. Aaron Wu confirmed that the architecture port is no longer relevant, and multiple people suggested removing blackfin independently because of some of its oddities like a non-working SMP port, and the amount of duplication between the chip variants, which cause extra work when doing cross-architecture changes. Link: https://docs.blackfin.uclinux.org/ Acked-by: Aaron Wu Acked-by: Bryan Wu Cc: Steven Miao Cc: Mike Frysinger Signed-off-by: Arnd Bergmann --- arch/blackfin/kernel/shadow_console.c | 111 ---------------------------------- 1 file changed, 111 deletions(-) delete mode 100644 arch/blackfin/kernel/shadow_console.c (limited to 'arch/blackfin/kernel/shadow_console.c') diff --git a/arch/blackfin/kernel/shadow_console.c b/arch/blackfin/kernel/shadow_console.c deleted file mode 100644 index aeb8343eeb03..000000000000 --- a/arch/blackfin/kernel/shadow_console.c +++ /dev/null @@ -1,111 +0,0 @@ -/* - * manage a small early shadow of the log buffer which we can pass between the - * bootloader so early crash messages are communicated properly and easily - * - * Copyright 2009 Analog Devices Inc. - * - * Licensed under the GPL-2 or later. - */ - -#include -#include -#include -#include -#include -#include -#include - -#define SHADOW_CONSOLE_START (CONFIG_PHY_RAM_BASE_ADDRESS + 0x500) -#define SHADOW_CONSOLE_END (CONFIG_PHY_RAM_BASE_ADDRESS + 0x1000) -#define SHADOW_CONSOLE_MAGIC_LOC (CONFIG_PHY_RAM_BASE_ADDRESS + 0x4F0) -#define SHADOW_CONSOLE_MAGIC (0xDEADBEEF) - -static __initdata char *shadow_console_buffer = (char *)SHADOW_CONSOLE_START; - -__init void early_shadow_write(struct console *con, const char *s, - unsigned int n) -{ - unsigned int i; - /* - * save 2 bytes for the double null at the end - * once we fail on a long line, make sure we don't write a short line afterwards - */ - if ((shadow_console_buffer + n) <= (char *)(SHADOW_CONSOLE_END - 2)) { - /* can't use memcpy - it may not be relocated yet */ - for (i = 0; i <= n; i++) - shadow_console_buffer[i] = s[i]; - shadow_console_buffer += n; - shadow_console_buffer[0] = 0; - shadow_console_buffer[1] = 0; - } else - shadow_console_buffer = (char *)SHADOW_CONSOLE_END; -} - -static __initdata struct console early_shadow_console = { - .name = "early_shadow", - .write = early_shadow_write, - .flags = CON_BOOT | CON_PRINTBUFFER, - .index = -1, - .device = 0, -}; - -__init int shadow_console_enabled(void) -{ - return early_shadow_console.flags & CON_ENABLED; -} - -__init void mark_shadow_error(void) -{ - int *loc = (int *)SHADOW_CONSOLE_MAGIC_LOC; - loc[0] = SHADOW_CONSOLE_MAGIC; - loc[1] = SHADOW_CONSOLE_START; -} - -__init void enable_shadow_console(void) -{ - if (!shadow_console_enabled()) { - register_console(&early_shadow_console); - /* for now, assume things are going to fail */ - mark_shadow_error(); - } -} - -static __init int disable_shadow_console(void) -{ - /* - * by the time pure_initcall runs, the standard console is enabled, - * and the early_console is off, so unset the magic numbers - * unregistering the console is taken care of in common code (See - * ./kernel/printk:disable_boot_consoles() ) - */ - int *loc = (int *)SHADOW_CONSOLE_MAGIC_LOC; - - loc[0] = 0; - - return 0; -} -pure_initcall(disable_shadow_console); - -/* - * since we can't use printk, dump numbers (as hex), n = # bits - */ -__init void early_shadow_reg(unsigned long reg, unsigned int n) -{ - /* - * can't use any "normal" kernel features, since thay - * may not be relocated to their execute address yet - */ - int i; - char ascii[11] = " 0x"; - - n = n / 4; - reg = reg << ((8 - n) * 4); - n += 3; - - for (i = 3; i <= n ; i++) { - ascii[i] = hex_asc_lo(reg >> 28); - reg <<= 4; - } - early_shadow_write(NULL, ascii, n); - -} -- cgit