| Message ID | 20170604161808.26222-1-tnishinaga.dev@gmail.com |
|---|---|
| State | Accepted |
| Commit | 8f079cccb369995e46a2ab530d5d60b88c1e70bb |
| Delegated to: | Tom Rini |
| Headers | show |
On Mon, Jun 05, 2017 at 01:18:08AM +0900, tnishinaga.dev@gmail.com wrote: > Disable D-Cache is required when booting nommu Linux kernel. > (please see Linux kernel source "arch/arm/kernel/head-nommu.S") > > U-Boot is enabled D-cache and I-Cache at startup. > However, it does not disable D-Cache before > booting nommu Linux kernel. > Therefore, I call dcache_disable() > when the CPU is ARMv7M to fix this problem. > > Signed-off-by: Toshifumi NISHINAGA <tnishinaga.dev@gmail.com> Applied to u-boot/master, thanks!
diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c index 4dbe6a5303..d14a8b5737 100644 --- a/arch/arm/lib/bootm.c +++ b/arch/arm/lib/bootm.c @@ -359,6 +359,7 @@ static void boot_jump_linux(bootm_headers_t *images, int flag) #ifdef CONFIG_CPU_V7M ulong addr = (ulong)kernel_entry | 1; kernel_entry = (void *)addr; + dcache_disable(); #endif s = getenv("machid"); if (s) {
Disable D-Cache is required when booting nommu Linux kernel. (please see Linux kernel source "arch/arm/kernel/head-nommu.S") U-Boot is enabled D-cache and I-Cache at startup. However, it does not disable D-Cache before booting nommu Linux kernel. Therefore, I call dcache_disable() when the CPU is ARMv7M to fix this problem. Signed-off-by: Toshifumi NISHINAGA <tnishinaga.dev@gmail.com> --- arch/arm/lib/bootm.c | 1 + 1 file changed, 1 insertion(+)