The algorithm to detect serial mode can be shared between i.M6 and i.MX7 as wall as simplified a bit by replacing swich goto/break/return termination logic with more trivial if statements. This commit also sets the stage for additional improvements in the commits that follow. Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx> --- arch/arm/mach-imx/boot.c | 50 +++++++++++++++++++++++------------------------- 1 file changed, 24 insertions(+), 26 deletions(-) diff --git a/arch/arm/mach-imx/boot.c b/arch/arm/mach-imx/boot.c index 9f5ddf629..dc385ceae 100644 --- a/arch/arm/mach-imx/boot.c +++ b/arch/arm/mach-imx/boot.c @@ -226,6 +226,18 @@ void imx53_get_boot_source(enum bootsource *src, int *instance) #define IMX6_SRC_SBMR1 0x04 #define IMX6_SRC_SBMR2 0x1c +#define IMX6_BMOD_SERIAL 0b01 +#define IMX6_BMOD_RESERVED 0b11 + +static bool imx6_bootsource_reserved(uint32_t sbmr2) +{ + return imx53_get_bmod(sbmr2) == IMX6_BMOD_RESERVED; +} + +static bool imx6_bootsource_serial(uint32_t sbmr2) +{ + return imx53_get_bmod(sbmr2) == IMX6_BMOD_SERIAL; +} void imx6_get_boot_source(enum bootsource *src, int *instance) { @@ -234,20 +246,13 @@ void imx6_get_boot_source(enum bootsource *src, int *instance) uint32_t sbmr2 = readl(src_base + IMX6_SRC_SBMR2); uint32_t boot_cfg_4_2_0; - switch (imx53_get_bmod(sbmr2)) { - case 0: /* Fuses, fall through */ - case 2: /* internal boot */ - goto internal_boot; - case 1: /* Serial Downloader */ - *src = BOOTSOURCE_SERIAL; - break; - case 3: /* reserved */ - break; - }; - - return; + if (imx6_bootsource_reserved(sbmr2)) + return; -internal_boot: + if (imx6_bootsource_serial(sbmr2)) { + *src = BOOTSOURCE_SERIAL; + return; + } /* BOOT_CFG1[7:4] */ switch ((sbmr1 >> 4) & 0xf) { @@ -295,20 +300,13 @@ void imx7_get_boot_source(enum bootsource *src, int *instance) uint32_t sbmr1 = readl(src_base + IMX7_SRC_SBMR1); uint32_t sbmr2 = readl(src_base + IMX7_SRC_SBMR2); - switch (imx53_get_bmod(sbmr2)) { - case 0: /* Fuses, fall through */ - case 2: /* internal boot */ - goto internal_boot; - case 1: /* Serial Downloader */ - *src = BOOTSOURCE_SERIAL; - break; - case 3: /* reserved */ - break; - }; - - return; + if (imx6_bootsource_reserved(sbmr2)) + return; -internal_boot: + if (imx6_bootsource_serial(sbmr2)) { + *src = BOOTSOURCE_SERIAL; + return; + } switch ((sbmr1 >> 12) & 0xf) { case 1: -- 2.14.3 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox