* Sanjeev Premi <premi@xxxxxx> [091009 12:54]: > This patch allows run-time detection of different > variants in the OMAP35x family. > > [1] http://marc.info/?l=linux-omap&m=125387617812499&w=2 > > This patch was been created against omap3-upstream at: > 21f1a8f : omap: Include bitops from cpu.h > > The testing was done on OMAP3EVM boards with these silicon > revisions - ES2.0, ES2.1, ES3.0 and ES3.1. > > Correctness against ES1.0 and a variant of ES2.0 was verified > by 'simulation' described in the test summary below: Great, thanks for doing these checks! Tony > > 1) ES 3.1 > > Value of IDCODE register in u-boot: > OMAP3_EVM # md 4830a204 4 > 4830a204: 4b7ae02f 00000000 00000008 000000f0 /.zK............ > ^^^ > Print during boot-up: > ... > Memory policy: ECC disabled, Data cache writeback > OMAP3430/3530 ES3.1 > ... > > 2) ES 3.0 > > Value of IDCODE register in u-boot: > OMAP3_EVM # md 4830a204 4 > 4830a204: 3b7ae02f 00000000 00000000 000000f0 /.z;............ > ^^^ > Print during boot-up: > ... > Memory policy: ECC disabled, Data cache writeback > OMAP3430/3530 ES3.0 > ... > > 3) ES 2.1 > > Value of IDCODE register in u-boot: > OMAP3_EVM # md 4830a204 4 > 4830a204: 2b7ae02f 00000000 00000000 000000f0 /.z+............ > ^^^ > Print during boot-up: > ... > Memory policy: ECC disabled, Data cache writeback > OMAP3430/3530 ES2.1 > ... > > 4) ES 2.0 (simulated) > > The code correctness was verified by 'simulating' an ES 1.0 device > as shown in the diff below: > - idcode = read_tap_reg(OMAP_TAP_IDCODE); > + idcode = (u32)0x1b7ae02f; > hawkeye = (idcode >> 12) & 0xffff; > > Print during boot-up: > ... > Memory policy: ECC disabled, Data cache writeback > OMAP3430/3530 ES2.0 > ... > > 5) ES 2.0 > > Value of IDCODE register in u-boot: > OMAP3_EVM # md 4830a204 4 > 4830a204: 0b7ae02f 00000000 00000000 000000f0 /.z............. > ^^^ > Print during boot-up: > ... > Memory policy: ECC disabled, Data cache writeback > OMAP3430/3530 ES2.0 > ... > > 6) ES 1.0 (simulated) > > The code correctness was verified by 'simulating' an ES 1.0 device > as shown in the diff below: > > cpuid = read_cpuid(CPUID_ID); > if ((((cpuid >> 4) & 0xfff) == 0xc08) && ((cpuid & 0xf) == 0x0)) { > omap_revision = OMAP3430_REV_ES1_0; > return; > } > + omap_revision = OMAP3430_REV_ES1_0; > + return; > > Print during boot-up: > ... > Memory policy: ECC disabled, Data cache writeback > OMAP3430/3530 ES1.0 > ... > > Sanjeev Premi (1): > Runtime detection of OMAP35x devices > > arch/arm/mach-omap2/id.c | 65 +++++++++++++++++++++++++++------ > arch/arm/plat-omap/include/mach/cpu.h | 37 +++++++++++++++++++ > 2 files changed, 91 insertions(+), 11 deletions(-) > > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
