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arm64: zynqmp: Print multiboot register value in EL3

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Multi boot register can be used for using different boot images and design
better boot strategy. Let EL3 SPL or U-Boot to read it and print it.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Michal Simek 2020-02-11 12:43:14 +01:00
parent 74bf17db39
commit c514301337
2 changed files with 17 additions and 1 deletions
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4
arch/arm/mach-zynqmp/include/mach/hardware.h
View file

@ -128,7 +128,9 @@ struct apu_regs {
#define ZYNQMP_SILICON_VER_SHIFT 12
struct csu_regs {
u32 reserved0[17];
u32 reserved0[4];
u32 multi_boot;
u32 reserved1[12];
u32 version;
};

14
board/xilinx/zynqmp/zynqmp.c
View file

@ -328,6 +328,17 @@ int board_early_init_f(void)
return ret;
}
static int multi_boot(void)
{
u32 multiboot;
multiboot = readl(&csu_base->multi_boot);
printf("Multiboot:\t%x\n", multiboot);
return 0;
}
int board_init(void)
{
struct udevice *dev;
@ -356,6 +367,9 @@ int board_init(void)
}
#endif
if (current_el() == 3)
multi_boot();
return 0;
}