tegra124/nyan: rougly stable code base

nyan: Clock setup.
Reviewed-on: https://chromium-review.googlesource.com/172106
(cherry picked from commit 3697b6454c0aceebcf735436de90ba2441c9b7b1)

tegra124: Call into the mainboard bootblock init if one exists.
Reviewed-on: https://chromium-review.googlesource.com/172581
(cherry picked from commit 3a0cd48a0d1a9ce6b32ed614cd81fb81f5f82aec)

nyan: Add a mainboard specific bootblock.
Reviewed-on: https://chromium-review.googlesource.com/172582
(cherry picked from commit a83d065d660a26fe71ed79879c25f84a1b669f69)

nyan: tegra124: Redestribute the clock code between the mainboard and soc.
Reviewed-on: https://chromium-review.googlesource.com/172583
(cherry picked from commit ea703137fc37befa7d5a65afc982e298a0daca1b)

nyan: Initialize the i2c pins and controllers.
Reviewed-on: https://chromium-review.googlesource.com/172584
(cherry picked from commit 9c10a3074ef834688fea46c03551c2e3e54e44a8)

nyan: Initialize the PMIC.
Reviewed-on: https://chromium-review.googlesource.com/172585
(cherry picked from commit f6be8b0e607e05b73b5e4a84afcf04c879eee88a)

tegra124: add a chip.h and use it in NYAN
Reviewed-on: https://chromium-review.googlesource.com/172773
(cherry picked from commit 4dd5f1f091f2dcae5ce38203bb86c62994609f8f)

tegra: Reorder GPIO register accesses to avoid glitching
Reviewed-on: https://chromium-review.googlesource.com/172730
(cherry picked from commit 61bedbf0f839e19b284d21af2ad10f2ff15e17d5)

tegra: Turn GPIO wrappers into macros to make them easier to write
Reviewed-on: https://chromium-review.googlesource.com/172731
(cherry picked from commit 94550fdfa5a8005d2e6a313041de212ab7ac470c)

tegra: Change GPIO functions to allow variable arguments
Reviewed-on: https://chromium-review.googlesource.com/172916
(cherry picked from commit e95ccd984f718a04b6067ff6ad5049a2cd74466d)

tegra124: Implement starting up the main CPUs.
Reviewed-on: https://chromium-review.googlesource.com/172917
(cherry picked from commit 7c5169a197310e18a3df0f176c499669e3c2bda3)

tegra: Simplify the I2C constants.
Reviewed-on: https://chromium-review.googlesource.com/172953
(cherry picked from commit 130a07c86dfa5ba5ac4580f29db927c91f045c76)

tegra124: Fix SPI base addresses
Reviewed-on: https://chromium-review.googlesource.com/173322
(cherry picked from commit da808e46919ebd3b9f2377a5889f0d5f10b92357)

tegra124: Scrub the clock constants.
Reviewed-on: https://chromium-review.googlesource.com/172954
(cherry picked from commit 9305ff0696a6d556a97f928b8683770833a309a4)

tegra124: add DMA support
Reviewed-on: https://chromium-review.googlesource.com/172951
(cherry picked from commit 4d2a5a56b922ac37d2326d7b139697567aac37b8)

tegra124: add basic SPI driver
Reviewed-on: https://chromium-review.googlesource.com/172952
(cherry picked from commit 5f861f13c7fd2dd881f3cbd0f1b4d4a9994ce429)

tegra124: Add an assembly stub which is run first on the main CPUs.
Reviewed-on: https://chromium-review.googlesource.com/173541
(cherry picked from commit e142b9572a89f43fe984c4fc87e3203f380ff4de)

nyan: tegra124: Set up dynamic cbmem.
Reviewed-on: https://chromium-review.googlesource.com/173542
(cherry picked from commit b6e1a70103446abb5c3440f145617e6566879c6f)

tegra124: Add an soc.c which sets up the chip operations and memory resource.
Reviewed-on: https://chromium-review.googlesource.com/173543
(cherry picked from commit af49a5bd1f589cf053c4808510138aae26e20db4)

tegra124: extend chip.h to include video settings
Reviewed-on: https://chromium-review.googlesource.com/173600
(cherry picked from commit 87687633a2116f58fad7333b3b639cee9089ad29)

tegra124 and nyan: fill in the devicetree a bit more, add defines
Reviewed-on: https://chromium-review.googlesource.com/173684
(cherry picked from commit c107eaca3dea42be89f61690d0d6cb2181acb147)

tegra124: clean-ups for SPI driver
Reviewed-on: https://chromium-review.googlesource.com/173599
(cherry picked from commit 1e2f9fd442ea336bf0663c3c8ea51f771e21beb7)

tegra124: add a #define for DMA alignment size
Reviewed-on: https://chromium-review.googlesource.com/173638
(cherry picked from commit f9dc2a8d8016fa7db974fb6cb01c3275e26832af)

tegra124: Add FIFO transmit functions to SPI driver
Reviewed-on: https://chromium-review.googlesource.com/173639
(cherry picked from commit 97e61f36ad96ce2f9b12a7ef765ee73d3f4285f7)

tegra124: clean-ups for DMA driver
Reviewed-on: https://chromium-review.googlesource.com/173598
(cherry picked from commit 750c0a5d6942748dd21f3a3f884ad94a561e86e0)

tegra124: early display and display code.
Reviewed-on: https://chromium-review.googlesource.com/173622
(cherry picked from commit 651c7ab96b1f136865e4673a120de7afc1218558)

tegra124: Move transfer size handling to spi_xfer()
Reviewed-on: https://chromium-review.googlesource.com/173680
(cherry picked from commit 4a9b7b47b3c09d70063ea843054ffef98f554621)

tegra124: strict error detection and reporting for SPI
Reviewed-on: https://chromium-review.googlesource.com/173681
(cherry picked from commit c056fa954e1dab40a56faec6c50385763a2eb010)

tegra124: add thread-friendly delays to SPI driver
Reviewed-on: https://chromium-review.googlesource.com/173648
(cherry picked from commit c1a321c8f61942801627f895c5db74c518e2aa8e)

Tegra124: Take the SPI1 controller out of reset and enable its clock.
Reviewed-on: https://chromium-review.googlesource.com/173787
(cherry picked from commit c026a3fb861e157f1e17a121fc2ef70b903f36f2)

tegra124: add two more clock setting values
Reviewed-on: https://chromium-review.googlesource.com/173772
(cherry picked from commit 7d79d7dd9f0c1fd7127a7ba41652d809ccff7a57)

nyan: Set up the ChromeOS related GPIOs and SPI bus 1 which goes to the EC.
Reviewed-on: https://chromium-review.googlesource.com/173788
(cherry picked from commit ff172bfe30f75983a1e8efa2ead0a4519583d0a8)

tegra124: Add some stub functions to the Tegra SPI driver.
Reviewed-on: https://chromium-review.googlesource.com/173789
(cherry picked from commit 8bc527aa4afd301c046b0e844c7fa400630af0d2)

tegra124: Build source files into the various stges needed by CONFIG_CHROMEOS.
Reviewed-on: https://chromium-review.googlesource.com/173790
(cherry picked from commit 86a6423b668ca912295c47d8c6e3ef6c6f8c6084)

nyan: Implement the code which reads GPIOs for ChromeOS.
Reviewed-on: https://chromium-review.googlesource.com/173791
(cherry picked from commit 4c394dfbce762574fc79edcb6e4ac6bf346e48a3)

nyan: Enable the CHROMEOS and ChromeOS EC related kconfig options.
Reviewed-on: https://chromium-review.googlesource.com/173792
(cherry picked from commit 2845a4487159aa4b1dba58d977f52c449574fc8e)

Tegra124: SDMMC: Take the SDMMC 3 and 4 out of reset and ungate their clocks.
Reviewed-on: https://chromium-review.googlesource.com/173793
(cherry picked from commit c238b87bcd9d35afd828476d6ee88322ac5d0f88)

tegra124: fix clear_fifo_status() in SPI driver
Reviewed-on: https://chromium-review.googlesource.com/173738
(cherry picked from commit f415d2c0aaffc0f1a3592551a2db782d538f8f4f)

ARM: Include stdint.h in cpu.h.
Reviewed-on: https://chromium-review.googlesource.com/173774
(cherry picked from commit f1930faea3f14b2a2560a6c4058ef38532b6f1a6)

tegra124: When setting up the main CPU, set its CPSR appropriately.
Reviewed-on: https://chromium-review.googlesource.com/173775
(cherry picked from commit bc2ba9c15cfd22aeaca4f80b1d13a8b5e0178ead)

tegra124: fix wrong names in clk_rst.h
Reviewed-on: https://chromium-review.googlesource.com/173955
(cherry picked from commit 19dd9c85e4a3d1f77b23828bcbdd4bd8c2688b8d)

tegra124: Fix up the PLLX divider table.
Reviewed-on: https://chromium-review.googlesource.com/173778
(cherry picked from commit 3362cf3a7d6f5eaec879dda42323345922f6df17)

tegra124: clock: Get rid of cpcon and dccon.
Reviewed-on: https://chromium-review.googlesource.com/173779
(cherry picked from commit 08626ffac4a7e9ea3d4738af87e9e4cced7be2c7)

Tegra124: SPI: Set and unset CS in spi_claim_bus and spi_release_bus.
Reviewed-on: https://chromium-review.googlesource.com/173953
(cherry picked from commit a2df8f3a9c9c54c62d6ff37d3baff1d30ee6d355)

armv7: expose dcache_line_bytes() in cache API
Reviewed-on: https://chromium-review.googlesource.com/173975
(cherry picked from commit 6727f65702c7668fcb33848b4113bc3d3cc04e12)

libpayload: expose dcache_line_bytes() in ARM cache API
Reviewed-on: https://chromium-review.googlesource.com/174099
(cherry picked from commit 9387b02dff85b42944d95c3bccf59059c93fb4a9)

armv4: add a stub for dcache_line_bytes()
Reviewed-on: https://chromium-review.googlesource.com/173976
(cherry picked from commit 924f61ea895b9268c716791466637009bbac6469)

tegra124: Base early UART on CLK_M to enable debugging of PLL init code
Reviewed-on: https://chromium-review.googlesource.com/174339
(cherry picked from commit 8d9387432f0a0d9b257b040304238e543cced1aa)

tegra124: Add additional PLLs and redesign the divisor table
Reviewed-on: https://chromium-review.googlesource.com/174380
(cherry picked from commit f6a5f5c4562f1ca733505717c175be00413f2384)

Squashed 49 commits for tegra124/nyan that included a lot of churn on
different pieces.

Change-Id: I00e8f5b74e835e01b28ca2e9c4af3709c9363d56
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6869
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>

5 files changed, 28 insertions, 6 deletions

diff --git a/src/arch/arm/armv4/cache.c b/src/arch/arm/armv4/cache.c
index 729b82c411..e5cf293dce 100644
--- a/src/arch/arm/armv4/cache.c
+++ b/src/arch/arm/armv4/cache.c
@@ -55,6 +55,17 @@ void dcache_invalidate_all(void)
 {
 }
 
+unsigned int dcache_line_bytes(void)
+{
+	/*
+	 * TODO: Implement this correctly. For now we just return a
+	 * reasonable value. It was added during Nyan development and
+	 * may be used in bootblock code. It matters only if dcache is
+	 * turned on.
+	 */
+	return 64;
+}
+
 void dcache_clean_by_mva(void const *addr, size_t len)
 {
 }
diff --git a/src/arch/arm/armv7/cache.c b/src/arch/arm/armv7/cache.c
index acd1f9aefa..4ee2687d38 100644
--- a/src/arch/arm/armv7/cache.c
+++ b/src/arch/arm/armv7/cache.c
@@ -194,17 +194,20 @@ void dcache_invalidate_all(void)
 	dcache_foreach(OP_DCISW);
 }
 
-static unsigned int line_bytes(void)
+unsigned int dcache_line_bytes(void)
 {
 	uint32_t ccsidr;
-	unsigned int size;
+	static unsigned int line_bytes = 0;
+
+	if (line_bytes)
+		return line_bytes;
 
 	ccsidr = read_ccsidr();
 	/* [2:0] - Indicates (Log2(number of words in cache line)) - 2 */
-	size = 1 << ((ccsidr & 0x7) + 2);	/* words per line */
-	size *= sizeof(unsigned int);		/* bytes per line */
+	line_bytes = 1 << ((ccsidr & 0x7) + 2);	/* words per line */
+	line_bytes *= sizeof(unsigned int);	/* bytes per line */
 
-	return size;
+	return line_bytes;
 }
 
 /*
@@ -217,7 +220,7 @@ static void dcache_op_mva(void const *addr, size_t len, enum dcache_op op)
 {
 	unsigned long line, linesize;
 
-	linesize = line_bytes();
+	linesize = dcache_line_bytes();
 	line = (uint32_t)addr & ~(linesize - 1);
 
 	dsb();
diff --git a/src/arch/arm/include/armv4/arch/cache.h b/src/arch/arm/include/armv4/arch/cache.h
index db4379a4c0..6a3f593f28 100644
--- a/src/arch/arm/include/armv4/arch/cache.h
+++ b/src/arch/arm/include/armv4/arch/cache.h
@@ -57,6 +57,9 @@ void dcache_clean_all(void);
 /* dcache invalidate all (on current level given by CCSELR) */
 void dcache_invalidate_all(void);
 
+/* returns number of bytes per cache line */
+unsigned int dcache_line_bytes(void);
+
 /* dcache and MMU disable */
 void dcache_mmu_disable(void);
 
diff --git a/src/arch/arm/include/armv7/arch/cache.h b/src/arch/arm/include/armv7/arch/cache.h
index ffdb55a706..5210dfe6a8 100644
--- a/src/arch/arm/include/armv7/arch/cache.h
+++ b/src/arch/arm/include/armv7/arch/cache.h
@@ -304,6 +304,9 @@ void dcache_clean_all(void);
 /* dcache invalidate all (on current level given by CCSELR) */
 void dcache_invalidate_all(void);
 
+/* returns number of bytes per cache line */
+unsigned int dcache_line_bytes(void);
+
 /* dcache and MMU disable */
 void dcache_mmu_disable(void);
 
diff --git a/src/arch/arm/include/armv7/arch/cpu.h b/src/arch/arm/include/armv7/arch/cpu.h
index 52cc8a3f50..275bb8c909 100644
--- a/src/arch/arm/include/armv7/arch/cpu.h
+++ b/src/arch/arm/include/armv7/arch/cpu.h
@@ -20,6 +20,8 @@
 #ifndef __ARCH_CPU_H__
 #define __ARCH_CPU_H__
 
+#include <stdint.h>
+
 #define asmlinkage
 
 #if !defined(__PRE_RAM__)