From patchwork Fri May 31 11:49:04 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tushar Behera X-Patchwork-Id: 2642951 Return-Path: X-Original-To: patchwork-linux-samsung-soc@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id A3379DFE82 for ; Fri, 31 May 2013 12:03:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755810Ab3EaMDo (ORCPT ); Fri, 31 May 2013 08:03:44 -0400 Received: from mail-pb0-f47.google.com ([209.85.160.47]:50499 "EHLO mail-pb0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756104Ab3EaMDU (ORCPT ); Fri, 31 May 2013 08:03:20 -0400 Received: by mail-pb0-f47.google.com with SMTP id rr4so2101142pbb.20 for ; Fri, 31 May 2013 05:03:19 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references :x-gm-message-state; bh=IFIrwnYVbE40SWtXlVzXo0Yh+3uc4GtbjOud+Ctcl8M=; b=jK29bos4XAwD9KbitxEYSYBvK2DbrbPMdBnKnzDsngNlWNOAYWXmrDeb2301rNUrp6 sEDavHjVjkYj56fjcxW6DSA/y7Ydz41JNw5fAylAH6XTQI9JjCrYt9xSNn8Bg1cQ9wcl E6dWefBAtSHCZTRj/gpaROKcaiDzcs3B7mTNfSMyU6djYKAjipgW0bFLJQngQrpV1wF9 CvYlFTg2m+qInBXt/iFAVjNwUrPjLPb15gzqvB326ean5FQRhLwTg8bjTAvPznW6xfV/ QrHzy+Bzhce2yAxq7XjVDloZyx+BPEolEfvi2H/zFmtK71NHEvWxpLSIvjDE9d+jucJs P8kA== X-Received: by 10.68.160.132 with SMTP id xk4mr12659041pbb.37.1370001799611; Fri, 31 May 2013 05:03:19 -0700 (PDT) Received: from linaro.sisodomain.com ([115.113.119.130]) by mx.google.com with ESMTPSA id ag4sm46445160pbc.20.2013.05.31.05.03.16 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 31 May 2013 05:03:19 -0700 (PDT) From: Tushar Behera To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org Cc: arnd@arndb.de, kgene.kim@samsung.com, olof@lixom.net, patches@linaro.org Subject: [PATCH 3/3] ARM: S5P64X0: Remove duplicate uncompress code Date: Fri, 31 May 2013 17:19:04 +0530 Message-Id: <1370000944-19786-4-git-send-email-tushar.behera@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1370000944-19786-1-git-send-email-tushar.behera@linaro.org> References: <1370000944-19786-1-git-send-email-tushar.behera@linaro.org> X-Gm-Message-State: ALoCoQnfdqbXPeiuzXwuONILCUbUFEvKNRDBbYkA1+igYTQhcXUbN6xvKHIBkZwi4KRzuslMEcsG Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org The uncompress code in S5P64X0 is almost same as the uncompress code defined in plat-samsung. Better to reuse that code. Signed-off-by: Tushar Behera --- arch/arm/mach-s5p64x0/include/mach/uncompress.h | 163 ++--------------------- 1 file changed, 8 insertions(+), 155 deletions(-) diff --git a/arch/arm/mach-s5p64x0/include/mach/uncompress.h b/arch/arm/mach-s5p64x0/include/mach/uncompress.h index 19e0d64..b28a551 100644 --- a/arch/arm/mach-s5p64x0/include/mach/uncompress.h +++ b/arch/arm/mach-s5p64x0/include/mach/uncompress.h @@ -14,171 +14,24 @@ #define __ASM_ARCH_UNCOMPRESS_H #include +#include -/* - * cannot use commonly - * because uart base of S5P6440 and S5P6450 is different - */ - -typedef unsigned int upf_t; /* cannot include linux/serial_core.h */ - -/* uart setup */ - -unsigned int fifo_mask; -unsigned int fifo_max; - -/* forward declerations */ - -static void arch_detect_cpu(void); - -/* defines for UART registers */ - -#include -#include - -/* working in physical space... */ -#undef S3C2410_WDOGREG -#define S3C2410_WDOGREG(x) ((S3C24XX_PA_WATCHDOG + (x))) - -/* how many bytes we allow into the FIFO at a time in FIFO mode */ -#define FIFO_MAX (14) - -unsigned long uart_base; - -static __inline__ void get_uart_base(void) +static void arch_detect_cpu(void) { unsigned int chipid; chipid = *(const volatile unsigned int __force *) 0xE0100118; - uart_base = S3C_UART_OFFSET * CONFIG_S3C_LOWLEVEL_UART_PORT; - +#ifdef DEBUG_LL if ((chipid & 0xff000) == 0x50000) - uart_base += 0xEC800000; + uart_base = S5P6450_PA_UART(CONFIG_S3C_LOWLEVEL_UART_PORT); else - uart_base += 0xEC000000; -} - -static __inline__ void uart_wr(unsigned int reg, unsigned int val) -{ - volatile unsigned int *ptr; - - get_uart_base(); - ptr = (volatile unsigned int *)(reg + uart_base); - *ptr = val; -} - -static __inline__ unsigned int uart_rd(unsigned int reg) -{ - volatile unsigned int *ptr; - - get_uart_base(); - ptr = (volatile unsigned int *)(reg + uart_base); - return *ptr; -} - -/* - * we can deal with the case the UARTs are being run - * in FIFO mode, so that we don't hold up our execution - * waiting for tx to happen... - */ - -static void putc(int ch) -{ - if (uart_rd(S3C2410_UFCON) & S3C2410_UFCON_FIFOMODE) { - int level; - - while (1) { - level = uart_rd(S3C2410_UFSTAT); - level &= fifo_mask; - - if (level < fifo_max) - break; - } - - } else { - /* not using fifos */ - - while ((uart_rd(S3C2410_UTRSTAT) & S3C2410_UTRSTAT_TXE) != S3C2410_UTRSTAT_TXE) - barrier(); - } - - /* write byte to transmission register */ - uart_wr(S3C2410_UTXH, ch); -} - -static inline void flush(void) -{ -} - -#define __raw_writel(d, ad) \ - do { \ - *((volatile unsigned int __force *)(ad)) = (d); \ - } while (0) - - -#ifdef CONFIG_S3C_BOOT_ERROR_RESET - -static void arch_decomp_error(const char *x) -{ - putstr("\n\n"); - putstr(x); - putstr("\n\n -- System resetting\n"); - - __raw_writel(0x4000, S3C2410_WTDAT); - __raw_writel(0x4000, S3C2410_WTCNT); - __raw_writel(S3C2410_WTCON_ENABLE | S3C2410_WTCON_DIV128 | S3C2410_WTCON_RSTEN | S3C2410_WTCON_PRESCALE(0x40), S3C2410_WTCON); - - while(1); -} - -#define arch_error arch_decomp_error -#endif - -#ifdef CONFIG_S3C_BOOT_UART_FORCE_FIFO -static inline void arch_enable_uart_fifo(void) -{ - u32 fifocon = uart_rd(S3C2410_UFCON); - - if (!(fifocon & S3C2410_UFCON_FIFOMODE)) { - fifocon |= S3C2410_UFCON_RESETBOTH; - uart_wr(S3C2410_UFCON, fifocon); - - /* wait for fifo reset to complete */ - while (1) { - fifocon = uart_rd(S3C2410_UFCON); - if (!(fifocon & S3C2410_UFCON_RESETBOTH)) - break; - } - } -} + uart_base = S5P6440_PA_UART(CONFIG_S3C_LOWLEVEL_UART_PORT); #else -#define arch_enable_uart_fifo() do { } while(0) + uart_base = NULL; #endif -static void arch_decomp_setup(void) -{ - /* - * we may need to setup the uart(s) here if we are not running - * on an BAST... the BAST will have left the uarts configured - * after calling linux. - */ - - arch_detect_cpu(); - - /* - * Enable the UART FIFOs if they where not enabled and our - * configuration says we should turn them on. - */ - - arch_enable_uart_fifo(); + fifo_mask = S3C2440_UFSTAT_TXMASK; + fifo_max = 63 << S3C2440_UFSTAT_TXSHIFT; } - - - -static void arch_detect_cpu(void) -{ - /* we do not need to do any cpu detection here at the moment. */ -} - #endif /* __ASM_ARCH_UNCOMPRESS_H */