rockchip: Add arch timer 1Ghz support

Change-Id: I8e58b15be1823e732852a2aa76cc98813e6b4fe9
Signed-off-by: Xuhui Lin <xuhui.lin@rock-chips.com>

cpu: armv7: Add udelay support for 32-bits platforms in board_init_f()

Signed-off-by: Xuhui Lin <xuhui.lin@rock-chips.com>
Change-Id: I949e738d230dfc5f84421422f7d0201b66ff31f8

UPSTREAM: arm: armv7: solve issue for timer_rate_hz in arch timer

The current value timer_rate_hz causes a problem with function
timer_get_us() from lib time and then an issue with
readx_poll_timeou

UPSTREAM: arm: armv7: solve issue for timer_rate_hz in arch timer

The current value timer_rate_hz causes a problem with function
timer_get_us() from lib time and then an issue with
readx_poll_timeout() function.

With corrected value for tbclk() = timer_rate_hz = CONFIG_SYS_HZ_CLOCK
the weak functions in lib timer can be used:
- get_timer()
- __udelay()
So the specific function in this file are removed.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
(cherry picked from commit 77aace579a9a84c74e99d2e86ecc08b1d9ca402b)
Change-Id: Id289de433e49d396a95e3a72acf210be3a2d910b
Signed-off-by: Joseph Chen <chenjh@rock-chips.com>

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Merge branch 'master' of git://git.denx.de/u-boot

arm: armv7: add us timer for bootstage

solve issue when bootstage is used with armV7 generic timer
first call of timer_get_boot_us() use the function get_timer()
before timer initialization (arch.ti

arm: armv7: add us timer for bootstage

solve issue when bootstage is used with armV7 generic timer
first call of timer_get_boot_us() use the function get_timer()
before timer initialization (arch.timer_rate_hz = 0)
=> div by 0

Commit-notes

When I activate bootstage on ARMV7 architecture with platform
using the generic armv7 timer defined in file
./arch/arm/cpu/armv7m/timer.c

I have a issue because gd->arch.timer_rate_hz = 0

For me the get_timer() function should not used before timer_init
(which initialize gd->arch.timer_rate_hz) at least for the ARMV7
timer.

But in the init sequence, the first bootstage fucntion is called
before timer_init and this function use the timer function.

For me it is a error in the generic init sequence :
mark_bootstage is called before timer_init.

static init_fnc_t init_sequence_f[] = {
....
arch_cpu_init_dm,
mark_bootstage, /* need timer, go after init dm */
...
#if defined(CONFIG_ARM) || defined(CONFIG_MIPS) || \
defined(CONFIG_BLACKFIN) || defined(CONFIG_NDS32) || \
defined(CONFIG_SPARC)
timer_init, /* initialize timer */
#endif
.......

To solve the issue for all the paltform, we can move timer_init()
call just before mark_bootstage() in this array...

It should be ok for ARMV7 but I don't sure for other platform
impacted
- the other ARM platform or ARMV7 wich don't use generic timer
- MIPS BLACKFIN NDS32 or SPARC

and I don't sure of impact for other function called
(board_early_init_f for example....)

=> This patch solve issue only in timer armv7
get_boot_us() can be called everytime without div by 0 issue
(gd->arch.timer_rate_hz is not used)

END

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>

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Merge remote-tracking branch 'u-boot/master' into test

Merge branch 'master' of git://git.denx.de/u-boot-arm

Merge branch 'master' of git://git.denx.de/u-boot-arm

Merge branch 'u-boot-ti/master' into 'u-boot-arm/master'

arm: add support for arch timer

This patch add basic support for the architecture timer found on recent
ARMv7 based SoCs.

Signed-off-by: Vitaly Andrianov <vitalya@ti.com>
Signed-off-by: Murali Kari

arm: add support for arch timer

This patch add basic support for the architecture timer found on recent
ARMv7 based SoCs.

Signed-off-by: Vitaly Andrianov <vitalya@ti.com>
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

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