reset: Remove addr parameter from reset_cpu()

Historically, the reset_cpu() function had an `addr` parameter which was
meant to pass in an address of the reset vector location, where the CPU
should reset to.  This feature is no longer used anywhere in U-Boot as
all reset_cpu() implementations now ignore the passed value.  Generic
code has been added which always calls reset_cpu() with `0` which means
this feature can no longer be used easily anyway.

Over time, many implementations seem to have "misunderstood" the
existence of this parameter as a way to customize/parameterize the reset
(e.g.  COLD vs WARM resets).  As this is not properly supported, the
code will almost always not do what it is intended to (because all
call-sites just call reset_cpu() with 0).

To avoid confusion and to clean up the codebase from unused left-overs
of the past, remove the `addr` parameter entirely.  Code which intends
to support different kinds of resets should be rewritten as a sysreset
driver instead.

This transformation was done with the following coccinelle patch:

    @@
    expression argvalue;
    @@
    - reset_cpu(argvalue)
    + reset_cpu()

    @@
    identifier argname;
    type argtype;
    @@
    - reset_cpu(argtype argname)
    + reset_cpu(void)
    { ... }

Signed-off-by: Harald Seiler <hws@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>

3 files changed, 3 insertions, 3 deletions

diff --git a/drivers/sysreset/sysreset-uclass.c b/drivers/sysreset/sysreset-uclass.c
index a9908eb..2503b25 100644
--- a/drivers/sysreset/sysreset-uclass.c
+++ b/drivers/sysreset/sysreset-uclass.c
@@ -113,7 +113,7 @@ void sysreset_walk_halt(enum sysreset_t type)
 /**
  * reset_cpu() - calls sysreset_walk(SYSRESET_WARM)
  */
-void reset_cpu(ulong addr)
+void reset_cpu(void)
 {
 	sysreset_walk_halt(SYSRESET_WARM);
 }
diff --git a/drivers/watchdog/imx_watchdog.c b/drivers/watchdog/imx_watchdog.c
index 5e0a096..3586246 100644
--- a/drivers/watchdog/imx_watchdog.c
+++ b/drivers/watchdog/imx_watchdog.c
@@ -44,7 +44,7 @@ static void imx_watchdog_expire_now(struct watchdog_regs *wdog, bool ext_reset)
 
 #if !defined(CONFIG_IMX_WATCHDOG) || \
     (defined(CONFIG_IMX_WATCHDOG) && !CONFIG_IS_ENABLED(WDT))
-void __attribute__((weak)) reset_cpu(ulong addr)
+void __attribute__((weak)) reset_cpu(void)
 {
 	struct watchdog_regs *wdog = (struct watchdog_regs *)WDOG1_BASE_ADDR;
 
diff --git a/drivers/watchdog/ulp_wdog.c b/drivers/watchdog/ulp_wdog.c
index 7533fc6..6f63b11 100644
--- a/drivers/watchdog/ulp_wdog.c
+++ b/drivers/watchdog/ulp_wdog.c
@@ -77,7 +77,7 @@ void hw_watchdog_init(void)
 	hw_watchdog_reset();
 }
 
-void reset_cpu(ulong addr)
+void reset_cpu(void)
 {
 	struct wdog_regs *wdog = (struct wdog_regs *)WDOG_BASE_ADDR;