From 71ef544fea9e991379181432011abb47166fec7b Mon Sep 17 00:00:00 2001
From: batt <batt@38d2e660-2303-0410-9eaa-f027e97ec537>
Date: Thu, 15 Nov 2007 22:53:45 +0000
Subject: [PATCH] Add Page header for BattFS.

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@999 38d2e660-2303-0410-9eaa-f027e97ec537
---
 cpu/arm/drv/sysirq_at91.c | 18 +++++----
 fs/battfs.h               | 81 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 91 insertions(+), 8 deletions(-)
 create mode 100644 fs/battfs.h

diff --git a/cpu/arm/drv/sysirq_at91.c b/cpu/arm/drv/sysirq_at91.c
index 33e6b0cd..7b12af2d 100644
--- a/cpu/arm/drv/sysirq_at91.c
+++ b/cpu/arm/drv/sysirq_at91.c
@@ -98,12 +98,14 @@ static void sysirq_dispatcher(void) __attribute__ ((naked));
 static void sysirq_dispatcher(void)
 {
 	IRQ_ENTRY();
-	for (unsigned i = 0; i < countof(sysirq_tab); i++)
-	{
-		if (sysirq_tab[i].enabled
-		 && sysirq_tab[i].handler)
-			sysirq_tab[i].handler();
-	}
+
+	/* PIT */
+	if ((PIT_MR & BV(PITIEN))
+	    && (PIT_SR & BV(PITS))
+	    && sysirq_tab[SYSIRQ_PIT].handler)
+		sysirq_tab[SYSIRQ_PIT].handler();
+
+	/* TODO: add other system sources here */
 
 	IRQ_EXIT();
 }
@@ -123,8 +125,8 @@ void sysirq_init(void)
 	IRQ_SAVE_DISABLE(flags);
 
 	/* Disable all system interrupts */
-	for (unsigned i = 0; i < countof(sysirq_tab); i++)
-		sysirq_tab[i].setEnable(false);
+	PIT_MR &= BV(PITIEN);
+	/* TODO: add other system sources here */
 
 	/* Set the vector. */
 	AIC_SVR(SYSC_ID) = sysirq_dispatcher;
diff --git a/fs/battfs.h b/fs/battfs.h
new file mode 100644
index 00000000..0449d4f1
--- /dev/null
+++ b/fs/battfs.h
@@ -0,0 +1,81 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2007 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \version $Id:$
+ *
+ * \author Francesco Sacchi <batt@develer.com>
+ *
+ * \brief BattFS: a filesystem for embedded platforms (interface).
+ */
+
+#ifndef FS_BATTFS_H
+#define FS_BATTFS_H
+
+#include <cfg/compiler.h> // uintXX_t; STATIC_ASSERT
+
+/**
+ * BattFS page header.
+ * \note fields order is chosen to comply with alignment.
+ */
+typedef struct BattFsPageHeader
+{
+	uint16_t filled;      ///< filled bytes in page.
+	uint16_t page_off;    ///< Page offset inside file.
+	uint8_t  inode;       ///< File inode (file identifier).
+	uint8_t  seqnum;      ///< bit[1:0]: Page sequence number; bit[7:2] unused for now, must be set to 1.
+	uint16_t crc;         ///< CRC of the page header.
+} BattFsPageHeader;
+
+STATIC_ASSERT(sizeof(BattFsPageHeader) == 8);
+
+/**
+ * Reset page sequence number of struct \a m to default value (0xFF).
+ */
+#define RESET_SEQ(m) ((m).seqnum = 0xFF)
+
+/**
+ * Get page sequence number from struct \a m.
+ */
+#define SEQ(m) ((m).seqnum & 0x03)
+
+/**
+ * Set sequence number of struct \a m to \a d.
+ */
+#define SET_SEQ(m, d) ((m).seqnum = ((m).seqnum & 0xFC) | ((d) & 0x03))
+
+/**
+ * Increment sequence number of struct \a m.
+ */
+#define INC_SEQ(m) SET_SEQ((m), SEQ(m) + 1)
+
+
+#endif /* FS_BATTFS_H */
-- 
2.25.1