* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
-#ident "$Id:$"
/*
* The Xilinx SystemACE chip support is activated by defining
*
* According to Xilinx technical support, before accessing the
* SystemACE CF you need to set the following control bits:
- * FORCECFGMODE : 1
- * CFGMODE : 0
- * CFGSTART : 0
+ * FORCECFGMODE : 1
+ * CFGMODE : 0
+ * CFGSTART : 0
*/
-# include <common.h>
-# include <command.h>
-# include <systemace.h>
+#include <common.h>
+#include <command.h>
+#include <systemace.h>
#ifdef CONFIG_SYSTEMACE
static unsigned ace_readw(unsigned offset)
{
#if (CFG_SYSTEMACE_WIDTH == 8)
- u16 temp;
+ u16 temp;
#if !defined(__BIG_ENDIAN)
- temp =((u16)readb(CFG_SYSTEMACE_BASE+offset) << 8);
- temp |= (u16)readb(CFG_SYSTEMACE_BASE+offset+1);
+ temp = ((u16) readb(CFG_SYSTEMACE_BASE + offset) << 8);
+ temp |= (u16) readb(CFG_SYSTEMACE_BASE + offset + 1);
#else
- temp = (u16)readb(CFG_SYSTEMACE_BASE+offset);
- temp |=((u16)readb(CFG_SYSTEMACE_BASE+offset+1) << 8);
+ temp = (u16) readb(CFG_SYSTEMACE_BASE + offset);
+ temp |= ((u16) readb(CFG_SYSTEMACE_BASE + offset + 1) << 8);
#endif
- return temp;
+ return temp;
#else
- return readw(CFG_SYSTEMACE_BASE+offset);
+ return readw(CFG_SYSTEMACE_BASE + offset);
#endif
}
{
#if (CFG_SYSTEMACE_WIDTH == 8)
#if !defined(__BIG_ENDIAN)
- writeb((u8)(val>>8), CFG_SYSTEMACE_BASE+offset);
- writeb((u8)val, CFG_SYSTEMACE_BASE+offset+1);
+ writeb((u8) (val >> 8), CFG_SYSTEMACE_BASE + offset);
+ writeb((u8) val, CFG_SYSTEMACE_BASE + offset + 1);
#else
- writeb((u8)val, CFG_SYSTEMACE_BASE+offset);
- writeb((u8)(val>>8), CFG_SYSTEMACE_BASE+offset+1);
+ writeb((u8) val, CFG_SYSTEMACE_BASE + offset);
+ writeb((u8) (val >> 8), CFG_SYSTEMACE_BASE + offset + 1);
#endif
#else
- writew(val, CFG_SYSTEMACE_BASE+offset);
+ writew(val, CFG_SYSTEMACE_BASE + offset);
#endif
}
/* */
-static unsigned long systemace_read(int dev,
- unsigned long start,
- unsigned long blkcnt,
- unsigned long *buffer);
+static unsigned long systemace_read(int dev, unsigned long start,
+ unsigned long blkcnt,
+ unsigned long *buffer);
-static block_dev_desc_t systemace_dev = {0};
+static block_dev_desc_t systemace_dev = { 0 };
static int get_cf_lock(void)
{
- int retry = 10;
+ int retry = 10;
/* CONTROLREG = LOCKREG */
- unsigned val=ace_readw(0x18);
- val|=0x0002;
- ace_writew((val&0xffff), 0x18);
+ unsigned val = ace_readw(0x18);
+ val |= 0x0002;
+ ace_writew((val & 0xffff), 0x18);
/* Wait for MPULOCK in STATUSREG[15:0] */
- while (! (ace_readw(0x04) & 0x0002)) {
+ while (!(ace_readw(0x04) & 0x0002)) {
- if (retry < 0)
- return -1;
+ if (retry < 0)
+ return -1;
- udelay(100000);
- retry -= 1;
- }
+ udelay(100000);
+ retry -= 1;
+ }
- return 0;
+ return 0;
}
static void release_cf_lock(void)
{
- unsigned val=ace_readw(0x18);
- val&=~(0x0002);
- ace_writew((val&0xffff), 0x18);
+ unsigned val = ace_readw(0x18);
+ val &= ~(0x0002);
+ ace_writew((val & 0xffff), 0x18);
}
-block_dev_desc_t * systemace_get_dev(int dev)
+block_dev_desc_t *systemace_get_dev(int dev)
{
/* The first time through this, the systemace_dev object is
not yet initialized. In that case, fill it in. */
- if (systemace_dev.blksz == 0) {
- systemace_dev.if_type = IF_TYPE_UNKNOWN;
- systemace_dev.dev = 0;
- systemace_dev.part_type = PART_TYPE_UNKNOWN;
- systemace_dev.type = DEV_TYPE_HARDDISK;
- systemace_dev.blksz = 512;
- systemace_dev.removable = 1;
- systemace_dev.block_read = systemace_read;
+ if (systemace_dev.blksz == 0) {
+ systemace_dev.if_type = IF_TYPE_UNKNOWN;
+ systemace_dev.dev = 0;
+ systemace_dev.part_type = PART_TYPE_UNKNOWN;
+ systemace_dev.type = DEV_TYPE_HARDDISK;
+ systemace_dev.blksz = 512;
+ systemace_dev.removable = 1;
+ systemace_dev.block_read = systemace_read;
- init_part(&systemace_dev);
+ init_part(&systemace_dev);
- }
+ }
- return &systemace_dev;
+ return &systemace_dev;
}
/*
* the dev_desc) to read blocks of data. The return value is the
* number of blocks read. A zero return indicates an error.
*/
-static unsigned long systemace_read(int dev,
- unsigned long start,
- unsigned long blkcnt,
- unsigned long *buffer)
+static unsigned long systemace_read(int dev, unsigned long start,
+ unsigned long blkcnt, unsigned long *buffer)
{
- int retry;
- unsigned blk_countdown;
- unsigned char*dp = (unsigned char*)buffer;
- unsigned val;
-
- if (get_cf_lock() < 0) {
- unsigned status = ace_readw(0x04);
-
- /* If CFDETECT is false, card is missing. */
- if (! (status&0x0010)) {
- printf("** CompactFlash card not present. **\n");
- return 0;
- }
-
- printf("**** ACE locked away from me (STATUSREG=%04x)\n", status);
- return 0;
- }
-
+ int retry;
+ unsigned blk_countdown;
+ unsigned char *dp = (unsigned char *)buffer;
+ unsigned val;
+
+ if (get_cf_lock() < 0) {
+ unsigned status = ace_readw(0x04);
+
+ /* If CFDETECT is false, card is missing. */
+ if (!(status & 0x0010)) {
+ printf("** CompactFlash card not present. **\n");
+ return 0;
+ }
+
+ printf("**** ACE locked away from me (STATUSREG=%04x)\n",
+ status);
+ return 0;
+ }
#ifdef DEBUG_SYSTEMACE
- printf("... systemace read %lu sectors at %lu\n", blkcnt, start);
+ printf("... systemace read %lu sectors at %lu\n", blkcnt, start);
#endif
- retry = 2000;
- for (;;) {
- val = ace_readw(0x04);
+ retry = 2000;
+ for (;;) {
+ val = ace_readw(0x04);
- /* If CFDETECT is false, card is missing. */
- if (! (val & 0x0010)) {
- printf("**** ACE CompactFlash not found.\n");
- release_cf_lock();
- return 0;
- }
+ /* If CFDETECT is false, card is missing. */
+ if (!(val & 0x0010)) {
+ printf("**** ACE CompactFlash not found.\n");
+ release_cf_lock();
+ return 0;
+ }
- /* If RDYFORCMD, then we are ready to go. */
- if (val & 0x0100)
- break;
+ /* If RDYFORCMD, then we are ready to go. */
+ if (val & 0x0100)
+ break;
- if (retry < 0) {
- printf("**** SystemACE not ready.\n");
- release_cf_lock();
- return 0;
- }
+ if (retry < 0) {
+ printf("**** SystemACE not ready.\n");
+ release_cf_lock();
+ return 0;
+ }
- udelay(1000);
- retry -= 1;
- }
+ udelay(1000);
+ retry -= 1;
+ }
/* The SystemACE can only transfer 256 sectors at a time, so
limit the current chunk of sectors. The blk_countdown
variable is the number of sectors left to transfer. */
- blk_countdown = blkcnt;
- while (blk_countdown > 0) {
- unsigned trans = blk_countdown;
+ blk_countdown = blkcnt;
+ while (blk_countdown > 0) {
+ unsigned trans = blk_countdown;
- if (trans > 256) trans = 256;
+ if (trans > 256)
+ trans = 256;
#ifdef DEBUG_SYSTEMACE
- printf("... transfer %lu sector in a chunk\n", trans);
+ printf("... transfer %lu sector in a chunk\n", trans);
#endif
- /* Write LBA block address */
- ace_writew((start>> 0) & 0xffff, 0x10);
- ace_writew((start>>16) & 0x00ff, 0x12);
-
- /* NOTE: in the Write Sector count below, a count of 0
- causes a transfer of 256, so &0xff gives the right
- value for whatever transfer count we want. */
-
- /* Write sector count | ReadMemCardData. */
- ace_writew((trans&0xff) | 0x0300, 0x14);
-
- /* Reset the configruation controller */
- val = ace_readw(0x18);
- val|=0x0080;
- ace_writew(val, 0x18);
-
- retry = trans * 16;
- while (retry > 0) {
- int idx;
-
- /* Wait for buffer to become ready. */
- while (! (ace_readw(0x04) & 0x0020)) {
- udelay(100);
- }
-
- /* Read 16 words of 2bytes from the sector buffer. */
- for (idx = 0 ; idx < 16 ; idx += 1) {
- unsigned short val = ace_readw(0x40);
- *dp++ = val & 0xff;
- *dp++ = (val>>8) & 0xff;
- }
-
- retry -= 1;
- }
-
- /* Clear the configruation controller reset */
- val = ace_readw(0x18);
- val&=~0x0080;
- ace_writew(val, 0x18);
-
- /* Count the blocks we transfer this time. */
- start += trans;
- blk_countdown -= trans;
- }
-
- release_cf_lock();
-
- return blkcnt;
+ /* Write LBA block address */
+ ace_writew((start >> 0) & 0xffff, 0x10);
+ ace_writew((start >> 16) & 0x00ff, 0x12);
+
+ /* NOTE: in the Write Sector count below, a count of 0
+ causes a transfer of 256, so &0xff gives the right
+ value for whatever transfer count we want. */
+
+ /* Write sector count | ReadMemCardData. */
+ ace_writew((trans & 0xff) | 0x0300, 0x14);
+
+ /* Reset the configruation controller */
+ val = ace_readw(0x18);
+ val |= 0x0080;
+ ace_writew(val, 0x18);
+
+ retry = trans * 16;
+ while (retry > 0) {
+ int idx;
+
+ /* Wait for buffer to become ready. */
+ while (!(ace_readw(0x04) & 0x0020)) {
+ udelay(100);
+ }
+
+ /* Read 16 words of 2bytes from the sector buffer. */
+ for (idx = 0; idx < 16; idx += 1) {
+ unsigned short val = ace_readw(0x40);
+ *dp++ = val & 0xff;
+ *dp++ = (val >> 8) & 0xff;
+ }
+
+ retry -= 1;
+ }
+
+ /* Clear the configruation controller reset */
+ val = ace_readw(0x18);
+ val &= ~0x0080;
+ ace_writew(val, 0x18);
+
+ /* Count the blocks we transfer this time. */
+ start += trans;
+ blk_countdown -= trans;
+ }
+
+ release_cf_lock();
+
+ return blkcnt;
}
-#endif /* CONFIG_SYSTEMACE */
+#endif /* CONFIG_SYSTEMACE */
projects / u-boot.git / commitdiff