brcm2708: rename target to bcm27xx

This change makes the names of Broadcom targets consistent by using
the common notation based on SoC/CPU ID (which is used internally
anyway), bcmXXXX instead of brcmXXXX.
This is even used for target TITLE in make menuconfig already,
only the short target name used brcm so far.

Despite, since subtargets range from bcm2708 to bcm2711, it seems
appropriate to use bcm27xx instead of bcm2708 (again, as already done
for BOARDNAME).

This also renames the packages brcm2708-userland and brcm2708-gpu-fw.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 106 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-4.19/950-0487-drm-v3d-Add-a-little-debugfs-entry-for-measuring-the.patch b/target/linux/bcm27xx/patches-4.19/950-0487-drm-v3d-Add-a-little-debugfs-entry-for-measuring-the.patch
new file mode 100644
index 0000000000..847bb2089b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-4.19/950-0487-drm-v3d-Add-a-little-debugfs-entry-for-measuring-the.patch
@@ -0,0 +1,106 @@
+From 18f93916e42ea25fc77cab20d1e038620e33d741 Mon Sep 17 00:00:00 2001
+From: Eric Anholt <eric@anholt.net>
+Date: Fri, 28 Sep 2018 16:21:24 -0700
+Subject: [PATCH] drm/v3d: Add a little debugfs entry for measuring the
+ core clock.
+
+This adds just enough performance counter support to measure the
+clock.  We don't have linux kernel drivers for the clock driving the
+HW, and this was useful for determining that the V3D HW is running on
+a slow clock, not that the driver was slow.
+
+Signed-off-by: Eric Anholt <eric@anholt.net>
+Link: https://patchwork.freedesktop.org/patch/msgid/20180928232126.4332-2-eric@anholt.net
+Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
+(cherry picked from commit 6915c9a525e575732429c22b28eb11871a29374b)
+---
+ drivers/gpu/drm/v3d/v3d_debugfs.c | 35 +++++++++++++++++++++++++++++++
+ drivers/gpu/drm/v3d/v3d_regs.h    | 30 ++++++++++++++++++++++++++
+ 2 files changed, 65 insertions(+)
+
+--- a/drivers/gpu/drm/v3d/v3d_debugfs.c
++++ b/drivers/gpu/drm/v3d/v3d_debugfs.c
+@@ -179,9 +179,44 @@ static int v3d_debugfs_bo_stats(struct s
+ 	return 0;
+ }
+ 
++static int v3d_measure_clock(struct seq_file *m, void *unused)
++{
++	struct drm_info_node *node = (struct drm_info_node *)m->private;
++	struct drm_device *dev = node->minor->dev;
++	struct v3d_dev *v3d = to_v3d_dev(dev);
++	uint32_t cycles;
++	int core = 0;
++	int measure_ms = 1000;
++
++	if (v3d->ver >= 40) {
++		V3D_CORE_WRITE(core, V3D_V4_PCTR_0_SRC_0_3,
++			       V3D_SET_FIELD(V3D_PCTR_CYCLE_COUNT,
++					     V3D_PCTR_S0));
++		V3D_CORE_WRITE(core, V3D_V4_PCTR_0_CLR, 1);
++		V3D_CORE_WRITE(core, V3D_V4_PCTR_0_EN, 1);
++	} else {
++		V3D_CORE_WRITE(core, V3D_V3_PCTR_0_PCTRS0,
++			       V3D_PCTR_CYCLE_COUNT);
++		V3D_CORE_WRITE(core, V3D_V3_PCTR_0_CLR, 1);
++		V3D_CORE_WRITE(core, V3D_V3_PCTR_0_EN,
++			       V3D_V3_PCTR_0_EN_ENABLE |
++			       1);
++	}
++	msleep(measure_ms);
++	cycles = V3D_CORE_READ(core, V3D_PCTR_0_PCTR0);
++
++	seq_printf(m, "cycles: %d (%d.%d Mhz)\n",
++		   cycles,
++		   cycles / (measure_ms * 1000),
++		   (cycles / (measure_ms * 100)) % 10);
++
++	return 0;
++}
++
+ static const struct drm_info_list v3d_debugfs_list[] = {
+ 	{"v3d_ident", v3d_v3d_debugfs_ident, 0},
+ 	{"v3d_regs", v3d_v3d_debugfs_regs, 0},
++	{"measure_clock", v3d_measure_clock, 0},
+ 	{"bo_stats", v3d_debugfs_bo_stats, 0},
+ };
+ 
+--- a/drivers/gpu/drm/v3d/v3d_regs.h
++++ b/drivers/gpu/drm/v3d/v3d_regs.h
+@@ -267,6 +267,36 @@
+ # define V3D_PTB_BXCF_RWORDERDISA                      BIT(1)
+ # define V3D_PTB_BXCF_CLIPDISA                         BIT(0)
+ 
++#define V3D_V3_PCTR_0_EN                               0x00674
++#define V3D_V3_PCTR_0_EN_ENABLE                        BIT(31)
++#define V3D_V4_PCTR_0_EN                               0x00650
++/* When a bit is set, resets the counter to 0. */
++#define V3D_V3_PCTR_0_CLR                              0x00670
++#define V3D_V4_PCTR_0_CLR                              0x00654
++#define V3D_PCTR_0_OVERFLOW                            0x00658
++
++#define V3D_V3_PCTR_0_PCTRS0                           0x00684
++#define V3D_V3_PCTR_0_PCTRS15                          0x00660
++#define V3D_V3_PCTR_0_PCTRSX(x)                        (V3D_V3_PCTR_0_PCTRS0 + \
++							4 * (x))
++/* Each src reg muxes four counters each. */
++#define V3D_V4_PCTR_0_SRC_0_3                          0x00660
++#define V3D_V4_PCTR_0_SRC_28_31                        0x0067c
++# define V3D_PCTR_S0_MASK                              V3D_MASK(6, 0)
++# define V3D_PCTR_S0_SHIFT                             0
++# define V3D_PCTR_S1_MASK                              V3D_MASK(14, 8)
++# define V3D_PCTR_S1_SHIFT                             8
++# define V3D_PCTR_S2_MASK                              V3D_MASK(22, 16)
++# define V3D_PCTR_S2_SHIFT                             16
++# define V3D_PCTR_S3_MASK                              V3D_MASK(30, 24)
++# define V3D_PCTR_S3_SHIFT                             24
++# define V3D_PCTR_CYCLE_COUNT                          32
++
++/* Output values of the counters. */
++#define V3D_PCTR_0_PCTR0                               0x00680
++#define V3D_PCTR_0_PCTR31                              0x006fc
++#define V3D_PCTR_0_PCTRX(x)                            (V3D_PCTR_0_PCTR0 + \
++							4 * (x))
+ #define V3D_GMP_STATUS                                 0x00800
+ # define V3D_GMP_STATUS_GMPRST                         BIT(31)
+ # define V3D_GMP_STATUS_WR_COUNT_MASK                  V3D_MASK(30, 24)