ramips: remove Linux 5.4 support

We're at 5.10 stable, this can finally go.

Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>

1 files changed, 0 insertions, 61 deletions

diff --git a/target/linux/ramips/patches-5.4/100-mt7621-core-detect-hack.patch b/target/linux/ramips/patches-5.4/100-mt7621-core-detect-hack.patch
deleted file mode 100644
index 1c8b61f8ef..0000000000
--- a/target/linux/ramips/patches-5.4/100-mt7621-core-detect-hack.patch
+++ /dev/null
@@ -1,61 +0,0 @@
-There is a variant of MT7621 which contains only one CPU core instead of 2.
-This is not reflected in the config register, so the kernel detects more
-physical cores, which leads to a hang on SMP bringup.
-Add a hack to detect missing cores.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
-
---- a/arch/mips/kernel/smp-cps.c
-+++ b/arch/mips/kernel/smp-cps.c
-@@ -43,6 +43,11 @@ static unsigned core_vpe_count(unsigned
- 	return mips_cps_numvps(cluster, core);
- }
- 
-+bool __weak plat_cpu_core_present(int core)
-+{
-+	return true;
-+}
-+
- static void __init cps_smp_setup(void)
- {
- 	unsigned int nclusters, ncores, nvpes, core_vpes;
-@@ -60,6 +65,8 @@ static void __init cps_smp_setup(void)
- 
- 		ncores = mips_cps_numcores(cl);
- 		for (c = 0; c < ncores; c++) {
-+			if (!plat_cpu_core_present(c))
-+				continue;
- 			core_vpes = core_vpe_count(cl, c);
- 
- 			if (c > 0)
---- a/arch/mips/ralink/mt7621.c
-+++ b/arch/mips/ralink/mt7621.c
-@@ -13,6 +13,7 @@
- #include <asm/mips-cps.h>
- #include <asm/mach-ralink/ralink_regs.h>
- #include <asm/mach-ralink/mt7621.h>
-+#include <asm/mips-boards/launch.h>
- 
- #include <pinmux.h>
- 
-@@ -160,6 +161,20 @@ void __init ralink_of_remap(void)
- 		panic("Failed to remap core resources");
- }
- 
-+bool plat_cpu_core_present(int core)
-+{
-+	struct cpulaunch *launch = (struct cpulaunch *)CKSEG0ADDR(CPULAUNCH);
-+
-+	if (!core)
-+		return true;
-+	launch += core * 2; /* 2 VPEs per core */
-+	if (!(launch->flags & LAUNCH_FREADY))
-+		return false;
-+	if (launch->flags & (LAUNCH_FGO | LAUNCH_FGONE))
-+		return false;
-+	return true;
-+}
-+
- void prom_soc_init(struct ralink_soc_info *soc_info)
- {
- 	void __iomem *sysc = (void __iomem *) KSEG1ADDR(MT7621_SYSC_BASE);