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arm: socfpga: execute cold reboot by default 

This changes system reboot for socfpga to issue a cold reboot by
default instead of a warm reboot.

Warm reboot can still be used by setting reboot_mode to
REBOOT_WARM (e.g. via kernel command line 'reboot='), but this
patch ensures cold reboot is issued for both REBOOT_COLD and
REBOOT_HARD.

Also, cold reboot is more fail safe than warm reboot has some
issues at least fo CSEL=0 and BSEL=qspi, where the boot rom does
not set the qspi clock to a valid range.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
This commit is contained in:
Simon Goldschmidt 2019-05-03 11:15:07 +02:00 committed by Dinh Nguyen
parent 54ecb8f702
commit 716864586c
1 changed files with 6 additions and 6 deletions
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12
arch/arm/mach-socfpga/socfpga.c
View File

@ -73,10 +73,10 @@ static void socfpga_cyclone5_restart(enum reboot_mode mode, const char *cmd)
temp = readl(rst_manager_base_addr + SOCFPGA_RSTMGR_CTRL);
if (mode == REBOOT_HARD)
temp |= RSTMGR_CTRL_SWCOLDRSTREQ;
else
if (mode == REBOOT_WARM)
temp |= RSTMGR_CTRL_SWWARMRSTREQ;
else
temp |= RSTMGR_CTRL_SWCOLDRSTREQ;
writel(temp, rst_manager_base_addr + SOCFPGA_RSTMGR_CTRL);
}
@ -86,10 +86,10 @@ static void socfpga_arria10_restart(enum reboot_mode mode, const char *cmd)
temp = readl(rst_manager_base_addr + SOCFPGA_A10_RSTMGR_CTRL);
if (mode == REBOOT_HARD)
temp |= RSTMGR_CTRL_SWCOLDRSTREQ;
else
if (mode == REBOOT_WARM)
temp |= RSTMGR_CTRL_SWWARMRSTREQ;
else
temp |= RSTMGR_CTRL_SWCOLDRSTREQ;
writel(temp, rst_manager_base_addr + SOCFPGA_A10_RSTMGR_CTRL);
}