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MIPS: OCTEON: Extend number of supported CPUs past 32

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To support more than 48 CPUs, the bootinfo structure grows a new
coremask structure.  Add the definition of the structure and add it to
struct cvmx_bootinfo.  In prom_init(), copy the new coremask data into
the sysinfo structure, and use it in smp_setup().

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12319/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
David Daney
2016-02-01 17:46:54 -08:00
committed by Ralf Baechle
parent 58546e3b73
commit 7d52ab163c
5 changed files with 125 additions and 8 deletions
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14
arch/mips/include/asm/octeon/cvmx-bootinfo.h
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@@ -32,6 +32,8 @@
#ifndef __CVMX_BOOTINFO_H__
#define __CVMX_BOOTINFO_H__
#include "cvmx-coremask.h"
/*
* Current major and minor versions of the CVMX bootinfo block that is
* passed from the bootloader to the application. This is versioned
@@ -39,7 +41,7 @@
* versions.
*/
#define CVMX_BOOTINFO_MAJ_VER 1
#define CVMX_BOOTINFO_MIN_VER 3
#define CVMX_BOOTINFO_MIN_VER 4
#if (CVMX_BOOTINFO_MAJ_VER == 1)
#define CVMX_BOOTINFO_OCTEON_SERIAL_LEN 20
@@ -124,6 +126,13 @@ struct cvmx_bootinfo {
*/
uint64_t fdt_addr;
#endif
#if (CVMX_BOOTINFO_MIN_VER >= 4)
/*
* Coremask used for processors with more than 32 cores
* or with OCI. This replaces core_mask.
*/
struct cvmx_coremask ext_core_mask;
#endif
#else /* __BIG_ENDIAN */
/*
* Little-Endian: When the CPU mode is switched to
@@ -177,6 +186,9 @@ struct cvmx_bootinfo {
#if (CVMX_BOOTINFO_MIN_VER >= 3)
uint64_t fdt_addr;
#endif
#if (CVMX_BOOTINFO_MIN_VER >= 4)
struct cvmx_coremask ext_core_mask;
#endif
#endif
};