#include <common.h>
#include <command.h>
#include <asm/blackfin.h>
+#include <asm/mach-common/bits/bootrom.h>
#include "cpu.h"
/* A system soft reset makes external memory unusable so force
__attribute__ ((__l1_text__, __noreturn__))
static void bfin_reset(void)
{
+#ifdef SWRST
/* Wait for completion of "system" events such as cache line
* line fills so that we avoid infinite stalls later on as
* much as possible. This code is in L1, so it won't trigger
*/
__builtin_bfin_ssync();
- /* The bootrom checks to see how it was reset and will
- * automatically perform a software reset for us when
- * it starts executing after the core reset.
- */
- if (ANOMALY_05000353 || ANOMALY_05000386) {
- /* Initiate System software reset. */
- bfin_write_SWRST(0x7);
+ /* Initiate System software reset. */
+ bfin_write_SWRST(0x7);
- /* Due to the way reset is handled in the hardware, we need
- * to delay for 10 SCLKS. The only reliable way to do this is
- * to calculate the CCLK/SCLK ratio and multiply 10. For now,
- * we'll assume worse case which is a 1:15 ratio.
- */
- asm(
- "LSETUP (1f, 1f) LC0 = %0\n"
- "1: nop;"
- :
- : "a" (15 * 10)
- : "LC0", "LB0", "LT0"
- );
+ /* Due to the way reset is handled in the hardware, we need
+ * to delay for 10 SCLKS. The only reliable way to do this is
+ * to calculate the CCLK/SCLK ratio and multiply 10. For now,
+ * we'll assume worse case which is a 1:15 ratio.
+ */
+ asm(
+ "LSETUP (1f, 1f) LC0 = %0\n"
+ "1: nop;"
+ :
+ : "a" (15 * 10)
+ : "LC0", "LB0", "LT0"
+ );
- /* Clear System software reset */
- bfin_write_SWRST(0);
+ /* Clear System software reset */
+ bfin_write_SWRST(0);
- /* The BF526 ROM will crash during reset */
+ /* The BF526 ROM will crash during reset */
#if defined(__ADSPBF522__) || defined(__ADSPBF524__) || defined(__ADSPBF526__)
+ /* Seems to be fixed with newer parts though ... */
+ if (__SILICON_REVISION__ < 1 && bfin_revid() < 1)
bfin_read_SWRST();
#endif
- /* Wait for the SWRST write to complete. Cannot rely on SSYNC
- * though as the System state is all reset now.
- */
- asm(
- "LSETUP (1f, 1f) LC1 = %0\n"
- "1: nop;"
- :
- : "a" (15 * 1)
- : "LC1", "LB1", "LT1"
- );
- }
+ /* Wait for the SWRST write to complete. Cannot rely on SSYNC
+ * though as the System state is all reset now.
+ */
+ asm(
+ "LSETUP (1f, 1f) LC1 = %0\n"
+ "1: nop;"
+ :
+ : "a" (15 * 1)
+ : "LC1", "LB1", "LT1"
+ );
+#endif
while (1)
+#if defined(__ADSPBF60x__)
+ bfin_write_RCU0_CTL(0x1);
+#else
/* Issue core reset */
asm("raise 1");
+#endif
}
/* We need to trampoline ourselves up into L1 since our linker
* PC relative call with a 25 bit immediate. This is not enough
* to get us from the top of SDRAM into L1.
*/
-__attribute__ ((__noreturn__))
-static inline void bfin_reset_trampoline(void)
+int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
if (board_reset)
board_reset();
- while (1)
- asm("jump (%0);" : : "a" (bfin_reset));
-}
-
-__attribute__ ((__noreturn__))
-void bfin_reset_or_hang(void)
-{
-#ifdef CONFIG_PANIC_HANG
- hang();
-#else
- bfin_reset_trampoline();
-#endif
-}
-
-int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
-{
- bfin_reset_trampoline();
+ if (ANOMALY_05000353 || ANOMALY_05000386)
+ while (1)
+ asm("jump (%0);" : : "a" (bfin_reset));
+ else
+ bfrom_SoftReset((void *)(L1_SRAM_SCRATCH_END - 20));
return 0;
}