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| author | Lennert Buytenhek <buytenh@wantstofly.org> | 2009-02-20 02:31:35 +0100 |
|---|---|---|
| committer | Nicolas Pitre <nico@cam.org> | 2009-02-19 22:36:42 -0500 |
| commit | cfdeb6376e439c58c2d37de492d2a8c763621022 (patch) | |
| tree | 19243c67ec6411797028cbe538ea88410516049d /arch/arm/mach-mv78xx0/common.c | |
| parent | 12f4815b425b26a610e5dd9a5a5e02872f0f52c5 (diff) | |
| download | lwn-cfdeb6376e439c58c2d37de492d2a8c763621022.tar.gz lwn-cfdeb6376e439c58c2d37de492d2a8c763621022.zip | |
[ARM] mv78xx0: distinguish between different chip steppings
During boot, identify which chip stepping we're running on (determined
by looking at the first PCIe unit's device ID and revision registers),
and print a message with the details about what we found.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Diffstat (limited to 'arch/arm/mach-mv78xx0/common.c')
| -rw-r--r-- | arch/arm/mach-mv78xx0/common.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/arch/arm/mach-mv78xx0/common.c b/arch/arm/mach-mv78xx0/common.c index b0e4e0d8f506..538f8f4d4f23 100644 --- a/arch/arm/mach-mv78xx0/common.c +++ b/arch/arm/mach-mv78xx0/common.c @@ -719,6 +719,32 @@ struct sys_timer mv78xx0_timer = { /***************************************************************************** * General ****************************************************************************/ +static char * __init mv78xx0_id(void) +{ + u32 dev, rev; + + mv78xx0_pcie_id(&dev, &rev); + + if (dev == MV78X00_Z0_DEV_ID) { + if (rev == MV78X00_REV_Z0) + return "MV78X00-Z0"; + else + return "MV78X00-Rev-Unsupported"; + } else if (dev == MV78100_DEV_ID) { + if (rev == MV78100_REV_A0) + return "MV78100-A0"; + else + return "MV78100-Rev-Unsupported"; + } else if (dev == MV78200_DEV_ID) { + if (rev == MV78100_REV_A0) + return "MV78200-A0"; + else + return "MV78200-Rev-Unsupported"; + } else { + return "Device-Unknown"; + } +} + static int __init is_l2_writethrough(void) { return !!(readl(CPU_CONTROL) & L2_WRITETHROUGH); @@ -737,7 +763,8 @@ void __init mv78xx0_init(void) get_pclk_l2clk(hclk, core_index, &pclk, &l2clk); tclk = get_tclk(); - printk(KERN_INFO "MV78xx0 core #%d, ", core_index); + printk(KERN_INFO "%s ", mv78xx0_id()); + printk("core #%d, ", core_index); printk("PCLK = %dMHz, ", (pclk + 499999) / 1000000); printk("L2 = %dMHz, ", (l2clk + 499999) / 1000000); printk("HCLK = %dMHz, ", (hclk + 499999) / 1000000); |