diff options
author | Lucas Stach <dev@lynxeye.de> | 2019-11-09 15:28:37 +0100 |
---|---|---|
committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-11-11 09:15:56 +0100 |
commit | 096d308b6b780dba72538cf86c5031beaffe5e04 (patch) | |
tree | 2ee8ebd9ba40d02def6bd782380f30904d07fc59 /arch/arm/mach-zynq/zynq.c | |
parent | db3ea7aae9266e5f9328b25e440ac9cd095f8d17 (diff) | |
download | barebox-096d308b6b780dba72538cf86c5031beaffe5e04.tar.gz barebox-096d308b6b780dba72538cf86c5031beaffe5e04.tar.xz |
ARM: zynq: add bootsource detection
Implement the bootsource detection by reading the BOOT_MODE SLCR register
which holds the strap values used to select the boot source.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-zynq/zynq.c')
-rw-r--r-- | arch/arm/mach-zynq/zynq.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/arch/arm/mach-zynq/zynq.c b/arch/arm/mach-zynq/zynq.c index ad06c624d9..79a6b908e0 100644 --- a/arch/arm/mach-zynq/zynq.c +++ b/arch/arm/mach-zynq/zynq.c @@ -14,11 +14,12 @@ */ #include <asm/system.h> -#include <io.h> +#include <bootsource.h> #include <common.h> #include <init.h> -#include <restart.h> +#include <io.h> #include <mach/zynq7000-regs.h> +#include <restart.h> static void __noreturn zynq_restart_soc(struct restart_handler *rst) { @@ -30,6 +31,26 @@ static void __noreturn zynq_restart_soc(struct restart_handler *rst) hang(); } +static enum bootsource zynq_bootsource_get(void) +{ + u32 boot_mode = readl(ZYNQ_SLCR_BOOT_MODE); + + switch (boot_mode & 0x7) { + case 0x0: + return BOOTSOURCE_JTAG; + case 0x1: + return BOOTSOURCE_SPI; + case 0x2: + return BOOTSOURCE_NOR; + case 0x4: + return BOOTSOURCE_NAND; + case 0x5: + return BOOTSOURCE_MMC; + default: + return BOOTSOURCE_UNKNOWN; + } +} + static int zynq_init(void) { u32 val; @@ -50,6 +71,8 @@ static int zynq_init(void) restart_handler_register_fn(zynq_restart_soc); + bootsource_set(zynq_bootsource_get()); + return 0; } postcore_initcall(zynq_init); |