From ed7c635bfcfd59825ab5e4c1aeba51208e40258f Mon Sep 17 00:00:00 2001
From: Jean-Philippe Bernardy <jeanphilippe.bernardy@gmail.com>
Date: Tue, 8 Feb 2005 15:12:25 +0000
Subject: Support for flash chip identification on the gmini

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5853 a1c6a512-1295-4272-9138-f99709370657
---
 apps/debug_menu.c | 53 +++++++++++++++++++++++++++++++++++++++++------------
 1 file changed, 41 insertions(+), 12 deletions(-)

diff --git a/apps/debug_menu.c b/apps/debug_menu.c
index a41baf6753..97a3f9a9f4 100644
--- a/apps/debug_menu.c
+++ b/apps/debug_menu.c
@@ -237,6 +237,27 @@ unsigned short crc_16(const unsigned char* buf, unsigned len)
 }
 
 
+#if CONFIG_CPU == TCC730
+extern int idatastart __attribute__ ((section(".idata")));
+static unsigned flash_word_temp __attribute__ ((section (".idata")));
+
+static void flash_write_word(unsigned addr, unsigned value) __attribute__ ((section(".icode")));
+static void flash_write_word(unsigned addr, unsigned value) {
+    flash_word_temp = value;
+
+    long extAddr = (long)addr << 1;
+    ddma_transfer(1, 1, (char*)&flash_word_temp - (char*)&idatastart, extAddr, 2);  
+}
+
+static unsigned flash_read_word(unsigned addr) __attribute__ ((section(".icode")));
+static unsigned flash_read_word(unsigned addr) {
+    long extAddr = (long)addr << 1;
+    ddma_transfer(1, 1, (char*)&flash_word_temp - (char*)&idatastart, extAddr, 2);
+    return flash_word_temp;
+}
+
+#endif
+
 
 /* Tool function to read the flash manufacturer and type, if available.
    Only chips which could be reprogrammed in system will return values.
@@ -251,25 +272,33 @@ bool dbg_flash_id(unsigned* p_manufacturer, unsigned* p_device,
 {
     unsigned not_manu, not_id; /* read values before switching to ID mode */
     unsigned manu, id; /* read values when in ID mode */
+#if CONFIG_CPU == TCC730
+#define FLASH(addr) (flash_read_word(addr))
+#define SET_FLASH(addr, val) (flash_write_word((addr), (val)))
+#else
     volatile unsigned char* flash = (unsigned char*)0x2000000; /* flash mapping */
+#define FLASH(addr) (flash[addr])
+#define SET_FLASH(addr, val) (flash[addr] = val)
+    
+#endif
     int old_level; /* saved interrupt level */
 
-    not_manu = flash[0]; /* read the normal content */
-    not_id   = flash[1]; /* should be 'A' (0x41) and 'R' (0x52) from the "ARCH" marker */
+    not_manu = FLASH(0); /* read the normal content */
+    not_id   = FLASH(1); /* should be 'A' (0x41) and 'R' (0x52) from the "ARCH" marker */
 
     /* disable interrupts, prevent any stray flash access */
     old_level = set_irq_level(HIGHEST_IRQ_LEVEL);
 
-    flash[addr1] = 0xAA; /* enter command mode */
-    flash[addr2] = 0x55;
-    flash[addr1] = 0x90; /* ID command */
+    SET_FLASH(addr1, 0xAA); /* enter command mode */
+    SET_FLASH(addr2, 0x55);
+    SET_FLASH(addr1, 0x90); /* ID command */
     /* Atmel wants 20ms pause here */
     /* sleep(HZ/50); no sleeping possible while interrupts are disabled */
 
-    manu = flash[0]; /* read the IDs */
-    id   = flash[1];
+    manu = FLASH(0); /* read the IDs */
+    id   = FLASH(1);
 
-    flash[0] = 0xF0; /* reset flash (back to normal read mode) */
+    SET_FLASH(0, 0xF0); /* reset flash (back to normal read mode) */
     /* Atmel wants 20ms pause here */
     /* sleep(HZ/50); no sleeping possible while interrupts are disabled */
 
@@ -858,7 +887,7 @@ bool view_battery(void)
 {
     int view = 0;
     int i, x, y;
-    int maxv, minv;
+    unsigned short maxv, minv;
     char buf[32];
     
 #ifdef HAVE_LCD_BITMAP
@@ -1426,9 +1455,9 @@ static bool dbg_disk_info(void)
                 break;
 
             case 2:
-                snprintf(buf, sizeof buf, "%d MB",
-                         ((unsigned)identify_info[61] << 16 | 
-                          (unsigned)identify_info[60]) / 2048 );
+                snprintf(buf, sizeof buf, "%ld MB",
+                         ((unsigned long)identify_info[61] << 16 | 
+                          (unsigned long)identify_info[60]) / 2048 );
                 lcd_puts(0, y++, "Size");
                 lcd_puts(0, y++, buf);
                 break;
-- 
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