On 2/13/19 2:27 PM, Tom Rini wrote:
On Wed, Feb 13, 2019 at 12:37:06PM -0600, Andrew F. Davis wrote:
On HS devices the 512b region of reset isolated memory called MCU_PSRAM0 is firewalled by default. Until SYSFW is loaded we cannot use this memory. It is only used to store a single value left at the end of SRAM by ROM that will be needed later. Save that value to a global variable stored in the .data section. This section is used as .bss will be cleared between saving this value and using it.
Signed-off-by: Andrew F. Davis afd@ti.com
arch/arm/mach-k3/am6_init.c | 8 +++----- arch/arm/mach-k3/include/mach/am6_hardware.h | 3 --- 2 files changed, 3 insertions(+), 8 deletions(-)
diff --git a/arch/arm/mach-k3/am6_init.c b/arch/arm/mach-k3/am6_init.c index a5553190b4..462538e45d 100644 --- a/arch/arm/mach-k3/am6_init.c +++ b/arch/arm/mach-k3/am6_init.c @@ -49,11 +49,11 @@ static void ctrl_mmr_unlock(void) mmr_unlock(CTRL_MMR0_BASE, 7); }
+u32 bootindex __attribute__((section(".data")));
We need a comment above this one so it's clear down the line to others why we're doing something odd like this, thanks!
No problem, will add.