leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

arm: pxa: introducing cpuinfo display for marvell pxa270m

Browse Source 
According to table 2-3 on page 87 of Marvell's latest PXA270
Specification Update Rev. I from 2010.04.19 [1] there exists a breed of
chips with a new CPU ID for PXA270M A1 stepping which our latest
Colibri PXA270 V2.4A modules actually have assembled. This patch helps
in correctly identifying those chips upon boot as well which then looks
as follows:

CPU: Marvell PXA27xM rev. A1

[1] http://www.marvell.com/application-processors/pxa-family/assets/pxa_27x_spec_update.pdf

Acked-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Marcel Ziswiler 2015-03-04 14:57:31 +01:00 committed by Tom Rini
parent 41ffb45c35
commit 901f79e4de
1 changed files with 15 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
arch/arm/cpu/pxa/cpuinfo.c
View File

@ -46,6 +46,13 @@ int cpu_is_pxa27x(void)
return id == CPU_VALUE_PXA27X;
}
int cpu_is_pxa27xm(void)
{
uint32_t id = pxa_get_cpuid();
return ((id & CPU_MASK_PXA_PRODID) == CPU_VALUE_PXA27X) &&
((id & CPU_MASK_PXA_REVID) == 8);
}
uint32_t pxa_get_cpu_revision(void)
{
return pxa_get_cpuid() & CPU_MASK_PRODREV;
@ -91,13 +98,17 @@ static const char *pxa27x_get_revision(void)
id = pxa_get_cpuid() & CPU_MASK_PXA_REVID;
if ((id == 5) || (id == 6) || (id > 7))
if ((id == 5) || (id == 6) || (id > 8))
return unknown;
/* Cap the special PXA270 C5 case. */
if (id == 7)
id = 5;
/* Cap the special PXA270M A1 case. */
if (id == 8)
id = 1;
return rev[id];
}
@ -107,7 +118,9 @@ static int print_cpuinfo_pxa2xx(void)
puts("Marvell PXA25x rev. ");
puts(pxa25x_get_revision());
} else if (cpu_is_pxa27x()) {
puts("Marvell PXA27x rev. ");
puts("Marvell PXA27x");
if (cpu_is_pxa27xm()) puts("M");
puts(" rev. ");
puts(pxa27x_get_revision());
} else
return -EINVAL;