FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2024-12-14 21:01:29 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

ARM: tegra: set CPU reset handler using firmware

Browse Source 
Use a firmware operation to set the CPU reset handler and only resort to
doing it ourselves if there is none defined.

This supports the booting of secondary CPUs on devices using a TrustZone
secure monitor.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
This commit is contained in:
Alexandre Courbot 2013-11-24 15:30:51 +09:00 committed by Stephen Warren
parent ad14ecee4d
commit 265c89c994
1 changed files with 14 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
arch/arm/mach-tegra/reset.c
View File

@ -21,6 +21,7 @@
#include <asm/cacheflush.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/firmware.h>
#include "iomap.h"
#include "irammap.h"
@ -65,6 +66,7 @@ static void __init tegra_cpu_reset_handler_enable(void)
void __iomem *iram_base = IO_ADDRESS(TEGRA_IRAM_RESET_BASE);
const u32 reset_address = TEGRA_IRAM_RESET_BASE +
tegra_cpu_reset_handler_offset;
int err;
BUG_ON(is_enabled);
BUG_ON(tegra_cpu_reset_handler_size > TEGRA_IRAM_RESET_HANDLER_SIZE);
@ -72,9 +74,18 @@ static void __init tegra_cpu_reset_handler_enable(void)
memcpy(iram_base, (void *)__tegra_cpu_reset_handler_start,
tegra_cpu_reset_handler_size);
tegra_cpu_reset_handler_set(reset_address);
is_enabled = true;
err = call_firmware_op(set_cpu_boot_addr, 0, reset_address);
switch (err) {
case -ENOSYS:
tegra_cpu_reset_handler_set(reset_address);
/* pass-through */
case 0:
is_enabled = true;
break;
default:
pr_crit("Cannot set CPU reset handler: %d\n", err);
BUG();
}
}
void __init tegra_cpu_reset_handler_init(void)