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| author | Tom Rini <trini@konsulko.com> | 2017-04-04 09:20:03 -0400 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-04-04 09:20:03 -0400 |
| commit | 4951e9420e179977f49549e25d8fd6437b37da72 (patch) | |
| tree | e7498383776b712aa8fdefb54309ae2ffe08d170 | |
| parent | 5f9518b2e1126b6413bab32a8e3f507e0a89f857 (diff) | |
| parent | 6cba327bd96f90818a8beede51405228c54a5251 (diff) | |
| download | u-boot-4951e9420e179977f49549e25d8fd6437b37da72.tar.gz | |
Merge git://git.denx.de/u-boot-arc
In this patch-set we add support of new AXS103 firmware as well as
troubleshoot unexpected execution by multiple cores simultaneously.
| -rw-r--r-- | arch/arc/lib/start.S | 16 | ||||
| -rw-r--r-- | board/synopsys/axs10x/axs10x.c | 29 |
2 files changed, 39 insertions, 6 deletions
diff --git a/arch/arc/lib/start.S b/arch/arc/lib/start.S index 90ee7e0fe4..b2ba768309 100644 --- a/arch/arc/lib/start.S +++ b/arch/arc/lib/start.S @@ -10,6 +10,22 @@ #include <asm/arcregs.h> ENTRY(_start) + ; Non-masters will be halted immediately, they might be kicked later + ; by platform code right before passing control to the Linux kernel + ; in bootm.c:boot_jump_linux(). + lr r5, [identity] + lsr r5, r5, 8 + bmsk r5, r5, 7 + cmp r5, 0 + mov.nz r0, r5 + bz .Lmaster_proceed + flag 1 + nop + nop + nop + +.Lmaster_proceed: + /* Setup interrupt vector base that matches "__text_start" */ sr __ivt_start, [ARC_AUX_INTR_VEC_BASE] diff --git a/board/synopsys/axs10x/axs10x.c b/board/synopsys/axs10x/axs10x.c index a5e774b2cf..e6b69da3da 100644 --- a/board/synopsys/axs10x/axs10x.c +++ b/board/synopsys/axs10x/axs10x.c @@ -7,6 +7,7 @@ #include <common.h> #include <dwmmc.h> #include <malloc.h> +#include <asm/arcregs.h> #include "axs10x.h" DECLARE_GLOBAL_DATA_PTR; @@ -61,16 +62,32 @@ void smp_kick_all_cpus(void) { /* CPU start CREG */ #define AXC003_CREG_CPU_START 0xF0001400 - /* Bits positions in CPU start CREG */ #define BITS_START 0 -#define BITS_POLARITY 8 +#define BITS_START_MODE 4 #define BITS_CORE_SEL 9 -#define BITS_MULTICORE 12 -#define CMD (1 << BITS_MULTICORE) | (1 << BITS_CORE_SEL) | \ - (1 << BITS_POLARITY) | (1 << BITS_START) +/* + * In axs103 v1.1 START bits semantics has changed quite a bit. + * We used to have a generic START bit for all cores selected by CORE_SEL mask. + * But now we don't touch CORE_SEL at all because we have a dedicated START bit + * for each core: + * bit 0: Core 0 (master) + * bit 1: Core 1 (slave) + */ +#define BITS_START_CORE1 1 + +#define ARCVER_HS38_3_0 0x53 + + int core_family = read_aux_reg(ARC_AUX_IDENTITY) & 0xff; + int cmd = readl((void __iomem *)AXC003_CREG_CPU_START); - writel(CMD, (void __iomem *)AXC003_CREG_CPU_START); + if (core_family < ARCVER_HS38_3_0) { + cmd |= (1 << BITS_CORE_SEL) | (1 << BITS_START); + cmd &= ~(1 << BITS_START_MODE); + } else { + cmd |= (1 << BITS_START_CORE1); + } + writel(cmd, (void __iomem *)AXC003_CREG_CPU_START); } #endif |