| Message ID | 1369856663-29314-2-git-send-email-fabio.estevam@freescale.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, May 29, 2013 at 04:44:23PM -0300, Fabio Estevam wrote: > Some mxs userspace tools, such as multimedia plugins and kobs-ng (tool used to > burn boot images to NAND) rely on the 'Revision' field reported by > '/proc/cpuinfo'. > > Provide a mechanism to pass such information, so that now we can get: > > $ cat /proc/cpuinfo > processor : 0 > model name : ARM926EJ-S rev 5 (v5l) > BogoMIPS : 226.09 > Features : swp half fastmult edsp java > CPU implementer : 0x41 > CPU architecture: 5TEJ > CPU variant : 0x0 > CPU part : 0x926 > CPU revision : 5 > > Hardware : Freescale i.MX28 Evaluation Kit > Revision : 28012 > Serial : 0000000000000000 We now have a standard way to report SoC revision to user space. Check drivers/base/soc.c and arch/arm/mach-tegra/tegra.c for example. But I will be fine with populating system_rev for coping with those user space which are already spread widely if people think it's useful/helpful. Shawn > > Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> > --- > arch/arm/mach-mxs/mach-mxs.c | 15 +++++++++++++++ > 1 file changed, 15 insertions(+) > > diff --git a/arch/arm/mach-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c > index b632323..032812d 100644 > --- a/arch/arm/mach-mxs/mach-mxs.c > +++ b/arch/arm/mach-mxs/mach-mxs.c > @@ -29,6 +29,7 @@ > #include <asm/mach/map.h> > #include <asm/mach/time.h> > #include <asm/system_misc.h> > +#include <asm/system_info.h> > > #include "pm.h" > > @@ -443,10 +444,24 @@ static void mxs_print_silicon_rev(const char *cpu, int srev) > cpu, (srev >> 4) & 0xf, srev & 0xf); > } > > +static void mxs_pass_sysrev(void) > +{ > + int cputype = 0; > + > + if (strcmp(mxs_get_cpu_type(), "MX23")) > + cputype = 0x23000; > + > + if (strcmp(mxs_get_cpu_type(), "MX28")) > + cputype = 0x28000; > + > + system_rev = (cputype | mxs_get_cpu_rev()); > +} > + > static void __init mxs_machine_init(void) > { > > mxs_print_silicon_rev(mxs_get_cpu_type(), mxs_get_cpu_rev()); > + mxs_pass_sysrev(); > > if (of_machine_is_compatible("fsl,imx28-evk")) > imx28_evk_init(); > -- > 1.8.1.2 > >
diff --git a/arch/arm/mach-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c index b632323..032812d 100644 --- a/arch/arm/mach-mxs/mach-mxs.c +++ b/arch/arm/mach-mxs/mach-mxs.c @@ -29,6 +29,7 @@ #include <asm/mach/map.h> #include <asm/mach/time.h> #include <asm/system_misc.h> +#include <asm/system_info.h> #include "pm.h" @@ -443,10 +444,24 @@ static void mxs_print_silicon_rev(const char *cpu, int srev) cpu, (srev >> 4) & 0xf, srev & 0xf); } +static void mxs_pass_sysrev(void) +{ + int cputype = 0; + + if (strcmp(mxs_get_cpu_type(), "MX23")) + cputype = 0x23000; + + if (strcmp(mxs_get_cpu_type(), "MX28")) + cputype = 0x28000; + + system_rev = (cputype | mxs_get_cpu_rev()); +} + static void __init mxs_machine_init(void) { mxs_print_silicon_rev(mxs_get_cpu_type(), mxs_get_cpu_rev()); + mxs_pass_sysrev(); if (of_machine_is_compatible("fsl,imx28-evk")) imx28_evk_init();
Some mxs userspace tools, such as multimedia plugins and kobs-ng (tool used to burn boot images to NAND) rely on the 'Revision' field reported by '/proc/cpuinfo'. Provide a mechanism to pass such information, so that now we can get: $ cat /proc/cpuinfo processor : 0 model name : ARM926EJ-S rev 5 (v5l) BogoMIPS : 226.09 Features : swp half fastmult edsp java CPU implementer : 0x41 CPU architecture: 5TEJ CPU variant : 0x0 CPU part : 0x926 CPU revision : 5 Hardware : Freescale i.MX28 Evaluation Kit Revision : 28012 Serial : 0000000000000000 Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> --- arch/arm/mach-mxs/mach-mxs.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)