Commit 6b0cc65828 for qemu.org

commit 6b0cc658284b24e2d6d608a8e6150aa9b6747d9f
Author: Bernhard Beschow <shentey@gmail.com>
Date:   Sun Nov 3 14:33:56 2024 +0100

    hw/ppc/mpc8544_guts: Populate POR PLL ratio status register

    Populate this read-only register with some arbitrary values which avoids
    U-Boot's get_clocks() to hang().

    Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
    Signed-off-by: Bernhard Beschow <shentey@gmail.com>
    Message-ID: <20241103133412.73536-11-shentey@gmail.com>
    Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

diff --git a/hw/ppc/mpc8544_guts.c b/hw/ppc/mpc8544_guts.c
index e3540b0281..c02b34ccde 100644
--- a/hw/ppc/mpc8544_guts.c
+++ b/hw/ppc/mpc8544_guts.c
@@ -29,6 +29,12 @@
 #define MPC8544_GUTS_RSTCR_RESET      0x02

 #define MPC8544_GUTS_ADDR_PORPLLSR    0x00
+REG32(GUTS_PORPLLSR, 0x00)
+    FIELD(GUTS_PORPLLSR, E500_1_RATIO, 24, 6)
+    FIELD(GUTS_PORPLLSR, E500_0_RATIO, 16, 6)
+    FIELD(GUTS_PORPLLSR, DDR_RATIO, 9, 5)
+    FIELD(GUTS_PORPLLSR, PLAT_RATIO, 1, 5)
+
 #define MPC8544_GUTS_ADDR_PORBMSR     0x04
 #define MPC8544_GUTS_ADDR_PORIMPSCR   0x08
 #define MPC8544_GUTS_ADDR_PORDEVSR    0x0C
@@ -75,6 +81,12 @@ static uint64_t mpc8544_guts_read(void *opaque, hwaddr addr,

     addr &= MPC8544_GUTS_MMIO_SIZE - 1;
     switch (addr) {
+    case MPC8544_GUTS_ADDR_PORPLLSR:
+        value = FIELD_DP32(value, GUTS_PORPLLSR, E500_1_RATIO, 6); /* 3:1 */
+        value = FIELD_DP32(value, GUTS_PORPLLSR, E500_0_RATIO, 6); /* 3:1 */
+        value = FIELD_DP32(value, GUTS_PORPLLSR, DDR_RATIO, 12); /* 12:1 */
+        value = FIELD_DP32(value, GUTS_PORPLLSR, PLAT_RATIO, 6); /* 6:1 */
+        break;
     case MPC8544_GUTS_ADDR_PVR:
         value = env->spr[SPR_PVR];
         break;